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d3f7ed08e78b5b1c80ac451079e43d133bb74e43
blender-archive/source/blender/editors/interface/interface_panel.c
Hans Goudey 2e3b0e8a99 Fix: Dragging a modifier to the same index recalculates modifier stack 
The fix is to simply check if the final index is the same as the start
index and not call the "reorder" callback in that case.
2021-04-08 10:44:33 -05:00

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/*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
* All rights reserved.
*/
/** \file
* \ingroup edinterface
*/
/* a full doc with API notes can be found in
* bf-blender/trunk/blender/doc/guides/interface_API.txt */
#include <ctype.h>
#include <math.h>
#include <stdlib.h>
#include <string.h>
#include "MEM_guardedalloc.h"
#include "PIL_time.h"
#include "BLI_blenlib.h"
#include "BLI_math.h"
#include "BLI_utildefines.h"
#include "BLT_translation.h"
#include "DNA_screen_types.h"
#include "DNA_userdef_types.h"
#include "BKE_context.h"
#include "BKE_screen.h"
#include "RNA_access.h"
#include "BLF_api.h"
#include "WM_api.h"
#include "WM_types.h"
#include "ED_screen.h"
#include "UI_interface.h"
#include "UI_interface_icons.h"
#include "UI_resources.h"
#include "UI_view2d.h"
#include "GPU_batch_presets.h"
#include "GPU_immediate.h"
#include "GPU_matrix.h"
#include "GPU_state.h"
#include "interface_intern.h"
/* -------------------------------------------------------------------- */
/** \name Defines & Structs
* \{ */
#define ANIMATION_TIME 0.30
#define ANIMATION_INTERVAL 0.02
typedef enum uiPanelRuntimeFlag {
PANEL_LAST_ADDED = (1 << 0),
PANEL_ACTIVE = (1 << 2),
PANEL_WAS_ACTIVE = (1 << 3),
PANEL_ANIM_ALIGN = (1 << 4),
PANEL_NEW_ADDED = (1 << 5),
PANEL_SEARCH_FILTER_MATCH = (1 << 7),
/**
* Use the status set by property search (#PANEL_SEARCH_FILTER_MATCH)
* instead of #PNL_CLOSED. Set to true on every property search update.
*/
PANEL_USE_CLOSED_FROM_SEARCH = (1 << 8),
/** The Panel was before the start of the current / latest layout pass. */
PANEL_WAS_CLOSED = (1 << 9),
/**
* Set when the panel is being dragged and while it animates back to its aligned
* position. Unlike #PANEL_STATE_ANIMATION, this is applied to sub-panels as well.
*/
PANEL_IS_DRAG_DROP = (1 << 10),
/** Draw a border with the active color around the panel. */
PANEL_ACTIVE_BORDER = (1 << 11),
} uiPanelRuntimeFlag;
/* The state of the mouse position relative to the panel. */
typedef enum uiPanelMouseState {
PANEL_MOUSE_OUTSIDE, /** Mouse is not in the panel. */
PANEL_MOUSE_INSIDE_CONTENT, /** Mouse is in the actual panel content. */
PANEL_MOUSE_INSIDE_HEADER, /** Mouse is in the panel header. */
} uiPanelMouseState;
typedef enum uiHandlePanelState {
PANEL_STATE_DRAG,
PANEL_STATE_ANIMATION,
PANEL_STATE_EXIT,
} uiHandlePanelState;
typedef struct uiHandlePanelData {
uiHandlePanelState state;
/* Animation. */
wmTimer *animtimer;
double starttime;
/* Dragging. */
int startx, starty;
int startofsx, startofsy;
float start_cur_xmin, start_cur_ymin;
} uiHandlePanelData;
typedef struct PanelSort {
Panel *panel;
int new_offset_x;
int new_offset_y;
} PanelSort;
static void panel_set_expansion_from_list_data(const bContext *C, Panel *panel);
static int get_panel_real_size_y(const Panel *panel);
static void panel_activate_state(const bContext *C, Panel *panel, uiHandlePanelState state);
static int compare_panel(const void *a, const void *b);
static bool panel_type_context_poll(ARegion *region,
const PanelType *panel_type,
const char *context);
/** \} */
/* -------------------------------------------------------------------- */
/** \name Local Functions
* \{ */
static bool panel_active_animation_changed(ListBase *lb,
Panel **r_panel_animation,
bool *r_no_animation)
{
LISTBASE_FOREACH (Panel *, panel, lb) {
/* Detect panel active flag changes. */
if (!(panel->type && panel->type->parent)) {
if ((panel->runtime_flag & PANEL_WAS_ACTIVE) && !(panel->runtime_flag & PANEL_ACTIVE)) {
return true;
}
if (!(panel->runtime_flag & PANEL_WAS_ACTIVE) && (panel->runtime_flag & PANEL_ACTIVE)) {
return true;
}
}
/* Detect changes in panel expansions. */
if ((bool)(panel->runtime_flag & PANEL_WAS_CLOSED) != UI_panel_is_closed(panel)) {
*r_panel_animation = panel;
return false;
}
if ((panel->runtime_flag & PANEL_ACTIVE) && !UI_panel_is_closed(panel)) {
if (panel_active_animation_changed(&panel->children, r_panel_animation, r_no_animation)) {
return true;
}
}
/* Detect animation. */
if (panel->activedata) {
uiHandlePanelData *data = panel->activedata;
if (data->state == PANEL_STATE_ANIMATION) {
*r_panel_animation = panel;
}
else {
/* Don't animate while handling other interaction. */
*r_no_animation = true;
}
}
if ((panel->runtime_flag & PANEL_ANIM_ALIGN) && !(*r_panel_animation)) {
*r_panel_animation = panel;
}
}
return false;
}
/**
* \return True if the properties editor switch tabs since the last layout pass.
*/
static bool properties_space_needs_realign(const ScrArea *area, const ARegion *region)
{
if (area->spacetype == SPACE_PROPERTIES && region->regiontype == RGN_TYPE_WINDOW) {
SpaceProperties *sbuts = area->spacedata.first;
if (sbuts->mainbo != sbuts->mainb) {
return true;
}
}
return false;
}
static bool panels_need_realign(const ScrArea *area, ARegion *region, Panel **r_panel_animation)
{
*r_panel_animation = NULL;
if (properties_space_needs_realign(area, region)) {
return true;
}
/* Detect if a panel was added or removed. */
Panel *panel_animation = NULL;
bool no_animation = false;
if (panel_active_animation_changed(&region->panels, &panel_animation, &no_animation)) {
return true;
}
/* Detect panel marked for animation, if we're not already animating. */
if (panel_animation) {
if (!no_animation) {
*r_panel_animation = panel_animation;
}
return true;
}
return false;
}
/** \} */
/* -------------------------------------------------------------------- */
/** \name Functions for Instanced Panels
* \{ */
static Panel *panel_add_instanced(ARegion *region,
ListBase *panels,
PanelType *panel_type,
PointerRNA *custom_data)
{
Panel *panel = MEM_callocN(sizeof(Panel), __func__);
panel->type = panel_type;
BLI_strncpy(panel->panelname, panel_type->idname, sizeof(panel->panelname));
panel->runtime.custom_data_ptr = custom_data;
panel->runtime_flag |= PANEL_NEW_ADDED;
/* Add the panel's children too. Although they aren't instanced panels, we can still use this
* function to create them, as UI_panel_begin does other things we don't need to do. */
LISTBASE_FOREACH (LinkData *, child, &panel_type->children) {
PanelType *child_type = child->data;
panel_add_instanced(region, &panel->children, child_type, custom_data);
}
/* Make sure the panel is added to the end of the display-order as well. This is needed for
* loading existing files.
*
* Note: We could use special behavior to place it after the panel that starts the list of
* instanced panels, but that would add complexity that isn't needed for now. */
int max_sortorder = 0;
LISTBASE_FOREACH (Panel *, existing_panel, panels) {
if (existing_panel->sortorder > max_sortorder) {
max_sortorder = existing_panel->sortorder;
}
}
panel->sortorder = max_sortorder + 1;
BLI_addtail(panels, panel);
return panel;
}
/**
* Called in situations where panels need to be added dynamically rather than
* having only one panel corresponding to each #PanelType.
*/
Panel *UI_panel_add_instanced(const bContext *C,
ARegion *region,
ListBase *panels,
const char *panel_idname,
PointerRNA *custom_data)
{
ARegionType *region_type = region->type;
PanelType *panel_type = BLI_findstring(
&region_type->paneltypes, panel_idname, offsetof(PanelType, idname));
if (panel_type == NULL) {
printf("Panel type '%s' not found.\n", panel_idname);
return NULL;
}
Panel *new_panel = panel_add_instanced(region, panels, panel_type, custom_data);
/* Do this after #panel_add_instatnced so all sub-panels are added. */
panel_set_expansion_from_list_data(C, new_panel);
return new_panel;
}
/**
* Find a unique key to append to the #PanelType.idname for the lookup to the panel's #uiBlock.
* Needed for instanced panels, where there can be multiple with the same type and identifier.
*/
void UI_list_panel_unique_str(Panel *panel, char *r_name)
{
/* The panel sort-order will be unique for a specific panel type because the instanced
* panel list is regenerated for every change in the data order / length. */
snprintf(r_name, INSTANCED_PANEL_UNIQUE_STR_LEN, "%d", panel->sortorder);
}
/**
* Free a panel and its children. Custom data is shared by the panel and its children
* and is freed by #UI_panels_free_instanced.
*
* \note The only panels that should need to be deleted at runtime are panels with the
* #PANEL_TYPE_INSTANCED flag set.
*/
static void panel_delete(const bContext *C, ARegion *region, ListBase *panels, Panel *panel)
{
/* Recursively delete children. */
LISTBASE_FOREACH_MUTABLE (Panel *, child, &panel->children) {
panel_delete(C, region, &panel->children, child);
}
BLI_freelistN(&panel->children);
BLI_remlink(panels, panel);
if (panel->activedata) {
MEM_freeN(panel->activedata);
}
MEM_freeN(panel);
}
/**
* Remove instanced panels from the region's panel list.
*
* \note Can be called with NULL \a C, but it should be avoided because
* handlers might not be removed.
*/
void UI_panels_free_instanced(const bContext *C, ARegion *region)
{
/* Delete panels with the instanced flag. */
LISTBASE_FOREACH_MUTABLE (Panel *, panel, &region->panels) {
if ((panel->type != NULL) && (panel->type->flag & PANEL_TYPE_INSTANCED)) {
/* Make sure the panel's handler is removed before deleting it. */
if (C != NULL && panel->activedata != NULL) {
panel_activate_state(C, panel, PANEL_STATE_EXIT);
}
/* Free panel's custom data. */
if (panel->runtime.custom_data_ptr != NULL) {
MEM_freeN(panel->runtime.custom_data_ptr);
}
/* Free the panel and its sub-panels. */
panel_delete(C, region, &region->panels, panel);
}
}
}
/**
* Check if the instanced panels in the region's panels correspond to the list of data the panels
* represent. Returns false if the panels have been reordered or if the types from the list data
* don't match in any way.
*
* \param data: The list of data to check against the instanced panels.
* \param panel_idname_func: Function to find the #PanelType.idname for each item in the data list.
* For a readability and generality, this lookup happens separately for each type of panel list.
*/
bool UI_panel_list_matches_data(ARegion *region,
ListBase *data,
uiListPanelIDFromDataFunc panel_idname_func)
{
/* Check for NULL data. */
int data_len = 0;
Link *data_link = NULL;
if (data == NULL) {
data_len = 0;
data_link = NULL;
}
else {
data_len = BLI_listbase_count(data);
data_link = data->first;
}
int i = 0;
LISTBASE_FOREACH (Panel *, panel, &region->panels) {
if (panel->type != NULL && panel->type->flag & PANEL_TYPE_INSTANCED) {
/* The panels were reordered by drag and drop. */
if (panel->flag & PNL_INSTANCED_LIST_ORDER_CHANGED) {
return false;
}
/* We reached the last data item before the last instanced panel. */
if (data_link == NULL) {
return false;
}
/* Check if the panel type matches the panel type from the data item. */
char panel_idname[MAX_NAME];
panel_idname_func(data_link, panel_idname);
if (!STREQ(panel_idname, panel->type->idname)) {
return false;
}
data_link = data_link->next;
i++;
}
}
/* If we didn't make it to the last list item, the panel list isn't complete. */
if (i != data_len) {
return false;
}
return true;
}
static void reorder_instanced_panel_list(bContext *C, ARegion *region, Panel *drag_panel)
{
/* Without a type we cannot access the reorder callback. */
if (drag_panel->type == NULL) {
return;
}
/* Don't reorder if this instanced panel doesn't support drag and drop reordering. */
if (drag_panel->type->reorder == NULL) {
return;
}
char *context = NULL;
if (!UI_panel_category_is_visible(region)) {
context = drag_panel->type->context;
}
/* Find how many instanced panels with this context string. */
int list_panels_len = 0;
int start_index = -1;
LISTBASE_FOREACH (const Panel *, panel, &region->panels) {
if (panel->type) {
if (panel->type->flag & PANEL_TYPE_INSTANCED) {
if (panel_type_context_poll(region, panel->type, context)) {
if (panel == drag_panel) {
BLI_assert(start_index == -1); /* This panel should only appear once. */
start_index = list_panels_len;
}
list_panels_len++;
}
}
}
}
BLI_assert(start_index != -1); /* The drag panel should definitely be in the list. */
/* Sort the matching instanced panels by their display order. */
PanelSort *panel_sort = MEM_callocN(list_panels_len * sizeof(*panel_sort), __func__);
PanelSort *sort_index = panel_sort;
LISTBASE_FOREACH (Panel *, panel, &region->panels) {
if (panel->type) {
if (panel->type->flag & PANEL_TYPE_INSTANCED) {
if (panel_type_context_poll(region, panel->type, context)) {
sort_index->panel = panel;
sort_index++;
}
}
}
}
qsort(panel_sort, list_panels_len, sizeof(*panel_sort), compare_panel);
/* Find how many of those panels are above this panel. */
int move_to_index = 0;
for (; move_to_index < list_panels_len; move_to_index++) {
if (panel_sort[move_to_index].panel == drag_panel) {
break;
}
}
MEM_freeN(panel_sort);
if (move_to_index == start_index) {
/* In this case, the reorder was not changed, so don't do any updates or call the callback. */
return;
}
/* Set the bit to tell the interface to instanced the list. */
drag_panel->flag |= PNL_INSTANCED_LIST_ORDER_CHANGED;
/* Finally, move this panel's list item to the new index in its list. */
drag_panel->type->reorder(C, drag_panel, move_to_index);
}
/**
* Recursive implementation for #panel_set_expansion_from_list_data.
*
* \return Whether the closed flag for the panel or any sub-panels changed.
*/
static bool panel_set_expand_from_list_data_recursive(Panel *panel, short flag, short *flag_index)
{
const bool open = (flag & (1 << *flag_index));
bool changed = (open == UI_panel_is_closed(panel));
SET_FLAG_FROM_TEST(panel->flag, !open, PNL_CLOSED);
LISTBASE_FOREACH (Panel *, child, &panel->children) {
*flag_index = *flag_index + 1;
changed |= panel_set_expand_from_list_data_recursive(child, flag, flag_index);
}
return changed;
}
/**
* Set the expansion of the panel and its sub-panels from the flag stored in the
* corresponding list data. The flag has expansion stored in each bit in depth first order.
*/
static void panel_set_expansion_from_list_data(const bContext *C, Panel *panel)
{
BLI_assert(panel->type != NULL);
BLI_assert(panel->type->flag & PANEL_TYPE_INSTANCED);
if (panel->type->get_list_data_expand_flag == NULL) {
/* Instanced panel doesn't support loading expansion. */
return;
}
const short expand_flag = panel->type->get_list_data_expand_flag(C, panel);
short flag_index = 0;
/* Start panel animation if the open state was changed. */
if (panel_set_expand_from_list_data_recursive(panel, expand_flag, &flag_index)) {
panel_activate_state(C, panel, PANEL_STATE_ANIMATION);
}
}
/**
* Set expansion based on the data for instanced panels.
*/
static void region_panels_set_expansion_from_list_data(const bContext *C, ARegion *region)
{
LISTBASE_FOREACH (Panel *, panel, &region->panels) {
if (panel->runtime_flag & PANEL_ACTIVE) {
PanelType *panel_type = panel->type;
if (panel_type != NULL && panel->type->flag & PANEL_TYPE_INSTANCED) {
panel_set_expansion_from_list_data(C, panel);
}
}
}
}
/**
* Recursive implementation for #set_panels_list_data_expand_flag.
*/
static void get_panel_expand_flag(const Panel *panel, short *flag, short *flag_index)
{
const bool open = !(panel->flag & PNL_CLOSED);
SET_FLAG_FROM_TEST(*flag, open, (1 << *flag_index));
LISTBASE_FOREACH (const Panel *, child, &panel->children) {
*flag_index = *flag_index + 1;
get_panel_expand_flag(child, flag, flag_index);
}
}
/**
* Call the callback to store the panel and sub-panel expansion settings in the list item that
* corresponds to each instanced panel.
*
* \note This needs to iterate through all of the region's panels because the panel with changed
* expansion might have been the sub-panel of an instanced panel, meaning it might not know
* which list item it corresponds to.
*/
static void set_panels_list_data_expand_flag(const bContext *C, const ARegion *region)
{
LISTBASE_FOREACH (Panel *, panel, &region->panels) {
PanelType *panel_type = panel->type;
if (panel_type == NULL) {
continue;
}
/* Check for #PANEL_ACTIVE so we only set the expand flag for active panels. */
if (panel_type->flag & PANEL_TYPE_INSTANCED && panel->runtime_flag & PANEL_ACTIVE) {
short expand_flag;
short flag_index = 0;
get_panel_expand_flag(panel, &expand_flag, &flag_index);
if (panel->type->set_list_data_expand_flag) {
panel->type->set_list_data_expand_flag(C, panel, expand_flag);
}
}
}
}
/** \} */
/* -------------------------------------------------------------------- */
/** \name Panels
* \{ */
static bool panel_custom_data_active_get(const Panel *panel)
{
/* The caller should make sure the panel is active and has a type. */
BLI_assert(UI_panel_is_active(panel));
BLI_assert(panel->type != NULL);
if (panel->type->active_property[0] != '\0') {
PointerRNA *ptr = UI_panel_custom_data_get(panel);
if (ptr != NULL && !RNA_pointer_is_null(ptr)) {
return RNA_boolean_get(ptr, panel->type->active_property);
}
}
return false;
}
static void panel_custom_data_active_set(Panel *panel)
{
/* Since the panel is interacted with, it should be active and have a type. */
BLI_assert(UI_panel_is_active(panel));
BLI_assert(panel->type != NULL);
if (panel->type->active_property[0] != '\0') {
PointerRNA *ptr = UI_panel_custom_data_get(panel);
BLI_assert(RNA_struct_find_property(ptr, panel->type->active_property) != NULL);
if (ptr != NULL && !RNA_pointer_is_null(ptr)) {
RNA_boolean_set(ptr, panel->type->active_property, true);
}
}
}
/**
* Set flag state for a panel and its sub-panels.
*/
static void panel_set_flag_recursive(Panel *panel, short flag, bool value)
{
SET_FLAG_FROM_TEST(panel->flag, value, flag);
LISTBASE_FOREACH (Panel *, child, &panel->children) {
panel_set_flag_recursive(child, flag, value);
}
}
/**
* Set runtime flag state for a panel and its sub-panels.
*/
static void panel_set_runtime_flag_recursive(Panel *panel, short flag, bool value)
{
SET_FLAG_FROM_TEST(panel->runtime_flag, value, flag);
LISTBASE_FOREACH (Panel *, sub_panel, &panel->children) {
panel_set_runtime_flag_recursive(sub_panel, flag, value);
}
}
static void panels_collapse_all(ARegion *region, const Panel *from_panel)
{
const bool has_category_tabs = UI_panel_category_is_visible(region);
const char *category = has_category_tabs ? UI_panel_category_active_get(region, false) : NULL;
const PanelType *from_pt = from_panel->type;
LISTBASE_FOREACH (Panel *, panel, &region->panels) {
PanelType *pt = panel->type;
/* Close panels with headers in the same context. */
if (pt && from_pt && !(pt->flag & PANEL_TYPE_NO_HEADER)) {
if (!pt->context[0] || !from_pt->context[0] || STREQ(pt->context, from_pt->context)) {
if ((panel->flag & PNL_PIN) || !category || !pt->category[0] ||
STREQ(pt->category, category)) {
panel->flag |= PNL_CLOSED;
}
}
}
}
}
static bool panel_type_context_poll(ARegion *region,
const PanelType *panel_type,
const char *context)
{
if (UI_panel_category_is_visible(region)) {
return STREQ(panel_type->category, UI_panel_category_active_get(region, false));
}
if (panel_type->context[0] && STREQ(panel_type->context, context)) {
return true;
}
return false;
}
Panel *UI_panel_find_by_type(ListBase *lb, const PanelType *pt)
{
const char *idname = pt->idname;
LISTBASE_FOREACH (Panel *, panel, lb) {
if (STREQLEN(panel->panelname, idname, sizeof(panel->panelname))) {
return panel;
}
}
return NULL;
}
/**
* \note \a panel should be return value from #UI_panel_find_by_type and can be NULL.
*/
Panel *UI_panel_begin(
ARegion *region, ListBase *lb, uiBlock *block, PanelType *pt, Panel *panel, bool *r_open)
{
Panel *panel_last;
const char *drawname = CTX_IFACE_(pt->translation_context, pt->label);
const char *idname = pt->idname;
const bool newpanel = (panel == NULL);
if (newpanel) {
panel = MEM_callocN(sizeof(Panel), __func__);
panel->type = pt;
BLI_strncpy(panel->panelname, idname, sizeof(panel->panelname));
if (pt->flag & PANEL_TYPE_DEFAULT_CLOSED) {
panel->flag |= PNL_CLOSED;
panel->runtime_flag |= PANEL_WAS_CLOSED;
}
panel->ofsx = 0;
panel->ofsy = 0;
panel->sizex = 0;
panel->sizey = 0;
panel->blocksizex = 0;
panel->blocksizey = 0;
panel->runtime_flag |= PANEL_NEW_ADDED;
BLI_addtail(lb, panel);
}
else {
/* Panel already exists. */
panel->type = pt;
}
panel->runtime.block = block;
BLI_strncpy(panel->drawname, drawname, sizeof(panel->drawname));
/* If a new panel is added, we insert it right after the panel that was last added.
* This way new panels are inserted in the right place between versions. */
for (panel_last = lb->first; panel_last; panel_last = panel_last->next) {
if (panel_last->runtime_flag & PANEL_LAST_ADDED) {
BLI_remlink(lb, panel);
BLI_insertlinkafter(lb, panel_last, panel);
break;
}
}
if (newpanel) {
panel->sortorder = (panel_last) ? panel_last->sortorder + 1 : 0;
LISTBASE_FOREACH (Panel *, panel_next, lb) {
if (panel_next != panel && panel_next->sortorder >= panel->sortorder) {
panel_next->sortorder++;
}
}
}
if (panel_last) {
panel_last->runtime_flag &= ~PANEL_LAST_ADDED;
}
/* Assign the new panel to the block. */
block->panel = panel;
panel->runtime_flag |= PANEL_ACTIVE | PANEL_LAST_ADDED;
if (region->alignment == RGN_ALIGN_FLOAT) {
UI_block_theme_style_set(block, UI_BLOCK_THEME_STYLE_POPUP);
}
*r_open = false;
if (UI_panel_is_closed(panel)) {
return panel;
}
*r_open = true;
return panel;
}
/**
* Create the panel header button group, used to mark which buttons are part of
* panel headers for the panel search process that happens later. This Should be
* called before adding buttons for the panel's header layout.
*/
void UI_panel_header_buttons_begin(Panel *panel)
{
uiBlock *block = panel->runtime.block;
ui_block_new_button_group(block, UI_BUTTON_GROUP_LOCK | UI_BUTTON_GROUP_PANEL_HEADER);
}
/**
* Finish the button group for the panel header to avoid putting panel body buttons in it.
*/
void UI_panel_header_buttons_end(Panel *panel)
{
uiBlock *block = panel->runtime.block;
/* A button group should always be created in #UI_panel_header_buttons_begin. */
BLI_assert(!BLI_listbase_is_empty(&block->button_groups));
uiButtonGroup *button_group = block->button_groups.last;
button_group->flag &= ~UI_BUTTON_GROUP_LOCK;
/* Repurpose the first header button group if it is empty, in case the first button added to
* the panel doesn't add a new group (if the button is created directly rather than through an
* interface layout call). */
if (BLI_listbase_is_single(&block->button_groups) &&
BLI_listbase_is_empty(&button_group->buttons)) {
button_group->flag &= ~UI_BUTTON_GROUP_PANEL_HEADER;
}
else {
/* Always add a new button group. Although this may result in many empty groups, without it,
* new buttons in the panel body not protected with a #ui_block_new_button_group call would
* end up in the panel header group. */
ui_block_new_button_group(block, 0);
}
}
static float panel_region_offset_x_get(const ARegion *region)
{
if (UI_panel_category_is_visible(region)) {
if (RGN_ALIGN_ENUM_FROM_MASK(region->alignment) != RGN_ALIGN_RIGHT) {
return UI_PANEL_CATEGORY_MARGIN_WIDTH;
}
}
return 0.0f;
}
/**
* Starting from the "block size" set in #UI_panel_end, calculate the full size
* of the panel including the sub-panel headers and buttons.
*/
static void panel_calculate_size_recursive(ARegion *region, Panel *panel)
{
int width = panel->blocksizex;
int height = panel->blocksizey;
LISTBASE_FOREACH (Panel *, child_panel, &panel->children) {
if (child_panel->runtime_flag & PANEL_ACTIVE) {
panel_calculate_size_recursive(region, child_panel);
width = max_ii(width, child_panel->sizex);
height += get_panel_real_size_y(child_panel);
}
}
/* Update total panel size. */
if (panel->runtime_flag & PANEL_NEW_ADDED) {
panel->runtime_flag &= ~PANEL_NEW_ADDED;
panel->sizex = width;
panel->sizey = height;
}
else {
const int old_sizex = panel->sizex, old_sizey = panel->sizey;
const int old_region_ofsx = panel->runtime.region_ofsx;
/* Update width/height if non-zero. */
if (width != 0) {
panel->sizex = width;
}
if (height != 0 || !UI_panel_is_closed(panel)) {
panel->sizey = height;
}
/* Check if we need to do an animation. */
if (panel->sizex != old_sizex || panel->sizey != old_sizey) {
panel->runtime_flag |= PANEL_ANIM_ALIGN;
panel->ofsy += old_sizey - panel->sizey;
}
panel->runtime.region_ofsx = panel_region_offset_x_get(region);
if (old_region_ofsx != panel->runtime.region_ofsx) {
panel->runtime_flag |= PANEL_ANIM_ALIGN;
}
}
}
void UI_panel_end(Panel *panel, int width, int height)
{
/* Store the size of the buttons layout in the panel. The actual panel size
* (including sub-panels) is calculated in #UI_panels_end. */
panel->blocksizex = width;
panel->blocksizey = height;
}
static void ui_offset_panel_block(uiBlock *block)
{
const uiStyle *style = UI_style_get_dpi();
/* Compute bounds and offset. */
ui_block_bounds_calc(block);
const int ofsy = block->panel->sizey - style->panelspace;
LISTBASE_FOREACH (uiBut *, but, &block->buttons) {
but->rect.ymin += ofsy;
but->rect.ymax += ofsy;
}
block->rect.xmax = block->panel->sizex;
block->rect.ymax = block->panel->sizey;
block->rect.xmin = block->rect.ymin = 0.0;
}
void ui_panel_tag_search_filter_match(Panel *panel)
{
panel->runtime_flag |= PANEL_SEARCH_FILTER_MATCH;
}
static void panel_matches_search_filter_recursive(const Panel *panel, bool *filter_matches)
{
*filter_matches |= panel->runtime_flag & PANEL_SEARCH_FILTER_MATCH;
/* If the panel has no match we need to make sure that its children are too. */
if (!*filter_matches) {
LISTBASE_FOREACH (const Panel *, child_panel, &panel->children) {
panel_matches_search_filter_recursive(child_panel, filter_matches);
}
}
}
/**
* Find whether a panel or any of its sub-panels contain a property that matches the search filter,
* depending on the search process running in #UI_block_apply_search_filter earlier.
*/
bool UI_panel_matches_search_filter(const Panel *panel)
{
bool search_filter_matches = false;
panel_matches_search_filter_recursive(panel, &search_filter_matches);
return search_filter_matches;
}
/**
* Set the flag telling the panel to use its search result status for its expansion.
*/
static void panel_set_expansion_from_search_filter_recursive(const bContext *C,
Panel *panel,
const bool use_search_closed)
{
/* This has to run on inactive panels that may not have a type,
* but we can prevent running on header-less panels in some cases. */
if (panel->type == NULL || !(panel->type->flag & PANEL_TYPE_NO_HEADER)) {
SET_FLAG_FROM_TEST(panel->runtime_flag, use_search_closed, PANEL_USE_CLOSED_FROM_SEARCH);
}
LISTBASE_FOREACH (Panel *, child_panel, &panel->children) {
/* Don't check if the sub-panel is active, otherwise the
* expansion won't be reset when the parent is closed. */
panel_set_expansion_from_search_filter_recursive(C, child_panel, use_search_closed);
}
}
/**
* Set the flag telling every panel to override its expansion with its search result status.
*/
static void region_panels_set_expansion_from_search_filter(const bContext *C,
ARegion *region,
const bool use_search_closed)
{
LISTBASE_FOREACH (Panel *, panel, &region->panels) {
/* Don't check if the panel is active, otherwise the expansion won't
* be correct when switching back to tab after exiting search. */
panel_set_expansion_from_search_filter_recursive(C, panel, use_search_closed);
}
set_panels_list_data_expand_flag(C, region);
}
/**
* Hide buttons in invisible layouts, which are created because buttons must be
* added for all panels in order to search, even panels that will end up closed.
*/
static void panel_remove_invisible_layouts_recursive(Panel *panel, const Panel *parent_panel)
{
uiBlock *block = panel->runtime.block;
BLI_assert(block != NULL);
BLI_assert(block->active);
if (parent_panel != NULL && UI_panel_is_closed(parent_panel)) {
/* The parent panel is closed, so this panel can be completely removed. */
UI_block_set_search_only(block, true);
LISTBASE_FOREACH (uiBut *, but, &block->buttons) {
but->flag |= UI_HIDDEN;
}
}
else if (UI_panel_is_closed(panel)) {
/* If sub-panels have no search results but the parent panel does, then the parent panel open
* and the sub-panels will close. In that case there must be a way to hide the buttons in the
* panel but keep the header buttons. */
LISTBASE_FOREACH (uiButtonGroup *, button_group, &block->button_groups) {
if (button_group->flag & UI_BUTTON_GROUP_PANEL_HEADER) {
continue;
}
LISTBASE_FOREACH (LinkData *, link, &button_group->buttons) {
uiBut *but = link->data;
but->flag |= UI_HIDDEN;
}
}
}
LISTBASE_FOREACH (Panel *, child_panel, &panel->children) {
if (child_panel->runtime_flag & PANEL_ACTIVE) {
BLI_assert(child_panel->runtime.block != NULL);
panel_remove_invisible_layouts_recursive(child_panel, panel);
}
}
}
static void region_panels_remove_invisible_layouts(ARegion *region)
{
LISTBASE_FOREACH (Panel *, panel, &region->panels) {
if (panel->runtime_flag & PANEL_ACTIVE) {
BLI_assert(panel->runtime.block != NULL);
panel_remove_invisible_layouts_recursive(panel, NULL);
}
}
}
/**
* Get the panel's expansion state, taking into account
* expansion set from property search if it applies.
*/
bool UI_panel_is_closed(const Panel *panel)
{
/* Header-less panels can never be closed, otherwise they could disappear. */
if (panel->type && panel->type->flag & PANEL_TYPE_NO_HEADER) {
return false;
}
if (panel->runtime_flag & PANEL_USE_CLOSED_FROM_SEARCH) {
return !UI_panel_matches_search_filter(panel);
}
return panel->flag & PNL_CLOSED;
}
bool UI_panel_is_active(const Panel *panel)
{
return panel->runtime_flag & PANEL_ACTIVE;
}
/** \} */
/* -------------------------------------------------------------------- */
/** \name Drawing
* \{ */
/**
* Draw panels, selected (panels currently being dragged) on top.
*/
void UI_panels_draw(const bContext *C, ARegion *region)
{
/* Draw in reverse order, because #uiBlocks are added in reverse order
* and we need child panels to draw on top. */
LISTBASE_FOREACH_BACKWARD (uiBlock *, block, &region->uiblocks) {
if (block->active && block->panel && !UI_panel_is_dragging(block->panel) &&
!UI_block_is_search_only(block)) {
UI_block_draw(C, block);
}
}
LISTBASE_FOREACH_BACKWARD (uiBlock *, block, &region->uiblocks) {
if (block->active && block->panel && UI_panel_is_dragging(block->panel) &&
!UI_block_is_search_only(block)) {
UI_block_draw(C, block);
}
}
}
#define PNL_ICON UI_UNIT_X /* Could be UI_UNIT_Y too. */
/* For button layout next to label. */
void UI_panel_label_offset(const uiBlock *block, int *r_x, int *r_y)
{
Panel *panel = block->panel;
const bool is_subpanel = (panel->type && panel->type->parent);
*r_x = UI_UNIT_X * 1.0f;
*r_y = UI_UNIT_Y * 1.5f;
if (is_subpanel) {
*r_x += (0.7f * UI_UNIT_X);
}
}
static void panel_title_color_get(const Panel *panel,
const bool show_background,
const bool region_search_filter_active,
uchar r_color[4])
{
if (!show_background) {
/* Use menu colors for floating panels. */
bTheme *btheme = UI_GetTheme();
const uiWidgetColors *wcol = &btheme->tui.wcol_menu_back;
copy_v4_v4_uchar(r_color, (const uchar *)wcol->text);
return;
}
const bool search_match = UI_panel_matches_search_filter(panel);
UI_GetThemeColor4ubv(TH_TITLE, r_color);
if (region_search_filter_active && !search_match) {
r_color[0] *= 0.5;
r_color[1] *= 0.5;
r_color[2] *= 0.5;
}
}
static void panel_draw_highlight_border(const Panel *panel,
const rcti *rect,
const rcti *header_rect)
{
const bool draw_box_style = panel->type->flag & PANEL_TYPE_DRAW_BOX;
const bool is_subpanel = panel->type->parent != NULL;
if (is_subpanel) {
return;
}
float radius;
if (draw_box_style) {
/* Use the theme for box widgets. */
const uiWidgetColors *box_wcol = &UI_GetTheme()->tui.wcol_box;
UI_draw_roundbox_corner_set(UI_CNR_ALL);
radius = box_wcol->roundness * U.widget_unit;
}
else {
UI_draw_roundbox_corner_set(UI_CNR_NONE);
radius = 0.0f;
}
float color[4];
UI_GetThemeColor4fv(TH_SELECT_ACTIVE, color);
UI_draw_roundbox_4fv(
&(const rctf){
.xmin = rect->xmin,
.xmax = rect->xmax,
.ymin = UI_panel_is_closed(panel) ? header_rect->ymin : rect->ymin,
.ymax = header_rect->ymax,
},
false,
radius,
color);
}
static void panel_draw_aligned_widgets(const uiStyle *style,
const Panel *panel,
const rcti *header_rect,
const float aspect,
const bool show_pin,
const bool show_background,
const bool region_search_filter_active)
{
const bool is_subpanel = panel->type->parent != NULL;
const uiFontStyle *fontstyle = (is_subpanel) ? &style->widgetlabel : &style->paneltitle;
const int header_height = BLI_rcti_size_y(header_rect);
const int scaled_unit = round_fl_to_int(UI_UNIT_X / aspect);
/* Offset triangle and text to the right for subpanels. */
const rcti widget_rect = {
.xmin = header_rect->xmin + (is_subpanel ? scaled_unit * 0.7f : 0),
.xmax = header_rect->xmax,
.ymin = header_rect->ymin,
.ymax = header_rect->ymax,
};
uchar title_color[4];
panel_title_color_get(panel, show_background, region_search_filter_active, title_color);
title_color[3] = 255;
/* Draw collapse icon. */
{
rctf collapse_rect = {
.xmin = widget_rect.xmin,
.xmax = widget_rect.xmin + header_height,
.ymin = widget_rect.ymin,
.ymax = widget_rect.ymax,
};
BLI_rctf_scale(&collapse_rect, 0.25f);
float triangle_color[4];
rgba_uchar_to_float(triangle_color, title_color);
ui_draw_anti_tria_rect(&collapse_rect, UI_panel_is_closed(panel) ? 'h' : 'v', triangle_color);
}
/* Draw text label. */
if (panel->drawname[0] != '\0') {
/* + 0.001f to avoid flirting with float inaccuracy .*/
const rcti title_rect = {
.xmin = widget_rect.xmin + (panel->labelofs / aspect) + scaled_unit * 1.1f,
.xmax = widget_rect.xmax,
.ymin = widget_rect.ymin - 2.0f / aspect,
.ymax = widget_rect.ymax,
};
UI_fontstyle_draw(fontstyle,
&title_rect,
panel->drawname,
title_color,
&(struct uiFontStyleDraw_Params){
.align = UI_STYLE_TEXT_LEFT,
});
}
/* Draw the pin icon. */
if (show_pin && (panel->flag & PNL_PIN)) {
GPU_blend(GPU_BLEND_ALPHA);
UI_icon_draw_ex(widget_rect.xmax - scaled_unit * 2.2f,
widget_rect.ymin + 5.0f / aspect,
ICON_PINNED,
aspect * U.inv_dpi_fac,
1.0f,
0.0f,
title_color,
false);
GPU_blend(GPU_BLEND_NONE);
}
/* Draw drag widget. */
if (!is_subpanel && show_background) {
const int drag_widget_size = header_height * 0.7f;
GPU_matrix_push();
/* The magic numbers here center the widget vertically and offset it to the left.
* Currently this depends on the height of the header, although it could be independent. */
GPU_matrix_translate_2f(widget_rect.xmax - scaled_unit * 1.15,
widget_rect.ymin + (header_height - drag_widget_size) * 0.5f);
const int col_tint = 84;
float color_high[4], color_dark[4];
UI_GetThemeColorShade4fv(TH_PANEL_HEADER, col_tint, color_high);
UI_GetThemeColorShade4fv(TH_PANEL_BACK, -col_tint, color_dark);
GPUBatch *batch = GPU_batch_preset_panel_drag_widget(
U.pixelsize, color_high, color_dark, drag_widget_size);
GPU_batch_program_set_builtin(batch, GPU_SHADER_2D_FLAT_COLOR);
GPU_batch_draw(batch);
GPU_matrix_pop();
}
}
static void panel_draw_aligned_backdrop(const Panel *panel,
const rcti *rect,
const rcti *header_rect)
{
const bool draw_box_style = panel->type->flag & PANEL_TYPE_DRAW_BOX;
const bool is_subpanel = panel->type->parent != NULL;
const bool is_open = !UI_panel_is_closed(panel);
if (is_subpanel && !is_open) {
return;
}
const uint pos = GPU_vertformat_attr_add(
immVertexFormat(), "pos", GPU_COMP_F32, 2, GPU_FETCH_FLOAT);
/* Draw with an opaque box backdrop for box style panels. */
if (draw_box_style) {
/* Use the theme for box widgets. */
const uiWidgetColors *box_wcol = &UI_GetTheme()->tui.wcol_box;
if (is_subpanel) {
/* Use rounded bottom corners for the last subpanel. */
if (panel->next == NULL) {
UI_draw_roundbox_corner_set(UI_CNR_BOTTOM_RIGHT | UI_CNR_BOTTOM_LEFT);
float color[4];
UI_GetThemeColor4fv(TH_PANEL_SUB_BACK, color);
/* Change the width a little bit to line up with sides. */
UI_draw_roundbox_aa(
&(const rctf){
.xmin = rect->xmin + U.pixelsize,
.xmax = rect->xmax - U.pixelsize,
.ymin = rect->ymin + U.pixelsize,
.ymax = rect->ymax,
},
true,
box_wcol->roundness * U.widget_unit,
color);
}
else {
immBindBuiltinProgram(GPU_SHADER_2D_UNIFORM_COLOR);
immUniformThemeColor(TH_PANEL_SUB_BACK);
immRectf(pos, rect->xmin + U.pixelsize, rect->ymin, rect->xmax - U.pixelsize, rect->ymax);
immUnbindProgram();
}
}
else {
/* Expand the top a tiny bit to give header buttons equal size above and below. */
rcti box_rect = {
.xmin = rect->xmin,
.xmax = rect->xmax,
.ymin = is_open ? rect->ymin : header_rect->ymin,
.ymax = header_rect->ymax + U.pixelsize,
};
ui_draw_box_opaque(&box_rect, UI_CNR_ALL);
/* Mimic the border between aligned box widgets for the bottom of the header. */
if (is_open) {
immBindBuiltinProgram(GPU_SHADER_2D_UNIFORM_COLOR);
GPU_blend(GPU_BLEND_ALPHA);
/* Top line. */
immUniformColor4ubv(box_wcol->outline);
immRectf(pos, rect->xmin, header_rect->ymin - U.pixelsize, rect->xmax, header_rect->ymin);
/* Bottom "shadow" line. */
immUniformThemeColor(TH_WIDGET_EMBOSS);
immRectf(pos,
rect->xmin,
header_rect->ymin - U.pixelsize,
rect->xmax,
header_rect->ymin - U.pixelsize - 1);
GPU_blend(GPU_BLEND_NONE);
immUnbindProgram();
}
}
}
else {
immBindBuiltinProgram(GPU_SHADER_2D_UNIFORM_COLOR);
GPU_blend(GPU_BLEND_ALPHA);
/* Panel backdrop. */
if (is_open || panel->type->flag & PANEL_TYPE_NO_HEADER) {
immUniformThemeColor(is_subpanel ? TH_PANEL_SUB_BACK : TH_PANEL_BACK);
immRectf(pos, rect->xmin, rect->ymin, rect->xmax, rect->ymax);
}
/* Panel header backdrops for non sub-panels. */
if (!is_subpanel) {
immUniformThemeColor(UI_panel_matches_search_filter(panel) ? TH_MATCH : TH_PANEL_HEADER);
immRectf(pos, rect->xmin, header_rect->ymin, rect->xmax, header_rect->ymax);
}
GPU_blend(GPU_BLEND_NONE);
immUnbindProgram();
}
}
/**
* Draw a panel integrated in buttons-window, tool/property lists etc.
*/
void ui_draw_aligned_panel(const uiStyle *style,
const uiBlock *block,
const rcti *rect,
const bool show_pin,
const bool show_background,
const bool region_search_filter_active)
{
const Panel *panel = block->panel;
/* Add 0.001f to prevent flicker from float inaccuracy. */
const rcti header_rect = {
rect->xmin,
rect->xmax,
rect->ymax,
rect->ymax + floor(PNL_HEADER / block->aspect + 0.001f),
};
if (show_background) {
panel_draw_aligned_backdrop(panel, rect, &header_rect);
}
/* Draw the widgets and text in the panel header. */
if (!(panel->type->flag & PANEL_TYPE_NO_HEADER)) {
panel_draw_aligned_widgets(style,
panel,
&header_rect,
block->aspect,
show_pin,
show_background,
region_search_filter_active);
}
if (panel_custom_data_active_get(panel)) {
panel_draw_highlight_border(panel, rect, &header_rect);
}
}
/** \} */
/* -------------------------------------------------------------------- */
/** \name Category Drawing (Tabs)
* \{ */
#define TABS_PADDING_BETWEEN_FACTOR 4.0f
#define TABS_PADDING_TEXT_FACTOR 6.0f
/**
* Draw vertical tabs on the left side of the region, one tab per category.
*/
void UI_panel_category_draw_all(ARegion *region, const char *category_id_active)
{
// #define USE_FLAT_INACTIVE
const bool is_left = RGN_ALIGN_ENUM_FROM_MASK(region->alignment != RGN_ALIGN_RIGHT);
View2D *v2d = &region->v2d;
const uiStyle *style = UI_style_get();
const uiFontStyle *fstyle = &style->widget;
const int fontid = fstyle->uifont_id;
short fstyle_points = fstyle->points;
const float aspect = ((uiBlock *)region->uiblocks.first)->aspect;
const float zoom = 1.0f / aspect;
const int px = U.pixelsize;
const int category_tabs_width = round_fl_to_int(UI_PANEL_CATEGORY_MARGIN_WIDTH * zoom);
const float dpi_fac = UI_DPI_FAC;
/* Padding of tabs around text. */
const int tab_v_pad_text = round_fl_to_int(TABS_PADDING_TEXT_FACTOR * dpi_fac * zoom) + 2 * px;
/* Padding between tabs. */
const int tab_v_pad = round_fl_to_int(TABS_PADDING_BETWEEN_FACTOR * dpi_fac * zoom);
bTheme *btheme = UI_GetTheme();
const float tab_curve_radius = btheme->tui.wcol_tab.roundness * U.widget_unit * zoom;
const int roundboxtype = is_left ? (UI_CNR_TOP_LEFT | UI_CNR_BOTTOM_LEFT) :
(UI_CNR_TOP_RIGHT | UI_CNR_BOTTOM_RIGHT);
bool is_alpha;
bool do_scaletabs = false;
#ifdef USE_FLAT_INACTIVE
bool is_active_prev = false;
#endif
float scaletabs = 1.0f;
/* Same for all tabs. */
/* Intentionally don't scale by 'px'. */
const int rct_xmin = is_left ? v2d->mask.xmin + 3 : (v2d->mask.xmax - category_tabs_width);
const int rct_xmax = is_left ? v2d->mask.xmin + category_tabs_width : (v2d->mask.xmax - 3);
const int text_v_ofs = (rct_xmax - rct_xmin) * 0.3f;
int y_ofs = tab_v_pad;
/* Primary theme colors. */
uchar theme_col_back[4];
uchar theme_col_text[3];
uchar theme_col_text_hi[3];
/* Tab colors. */
uchar theme_col_tab_bg[4];
float theme_col_tab_active[4];
float theme_col_tab_inactive[4];
float theme_col_tab_outline[4];
UI_GetThemeColor4ubv(TH_BACK, theme_col_back);
UI_GetThemeColor3ubv(TH_TEXT, theme_col_text);
UI_GetThemeColor3ubv(TH_TEXT_HI, theme_col_text_hi);
UI_GetThemeColor4ubv(TH_TAB_BACK, theme_col_tab_bg);
UI_GetThemeColor4fv(TH_TAB_ACTIVE, theme_col_tab_active);
UI_GetThemeColor4fv(TH_TAB_INACTIVE, theme_col_tab_inactive);
UI_GetThemeColor4fv(TH_TAB_OUTLINE, theme_col_tab_outline);
is_alpha = (region->overlap && (theme_col_back[3] != 255));
if (fstyle->kerning == 1) {
BLF_enable(fstyle->uifont_id, BLF_KERNING_DEFAULT);
}
BLF_enable(fontid, BLF_ROTATION);
BLF_rotation(fontid, M_PI_2);
// UI_fontstyle_set(&style->widget);
ui_fontscale(&fstyle_points, aspect / (U.pixelsize * 1.1f));
BLF_size(fontid, fstyle_points, U.dpi);
/* Check the region type supports categories to avoid an assert
* for showing 3D view panels in the properties space. */
if ((1 << region->regiontype) & RGN_TYPE_HAS_CATEGORY_MASK) {
BLI_assert(UI_panel_category_is_visible(region));
}
/* Calculate tab rectangle and check if we need to scale down. */
LISTBASE_FOREACH (PanelCategoryDyn *, pc_dyn, &region->panels_category) {
rcti *rct = &pc_dyn->rect;
const char *category_id = pc_dyn->idname;
const char *category_id_draw = IFACE_(category_id);
const int category_width = BLF_width(fontid, category_id_draw, BLF_DRAW_STR_DUMMY_MAX);
rct->xmin = rct_xmin;
rct->xmax = rct_xmax;
rct->ymin = v2d->mask.ymax - (y_ofs + category_width + (tab_v_pad_text * 2));
rct->ymax = v2d->mask.ymax - (y_ofs);
y_ofs += category_width + tab_v_pad + (tab_v_pad_text * 2);
}
if (y_ofs > BLI_rcti_size_y(&v2d->mask)) {
scaletabs = (float)BLI_rcti_size_y(&v2d->mask) / (float)y_ofs;
LISTBASE_FOREACH (PanelCategoryDyn *, pc_dyn, &region->panels_category) {
rcti *rct = &pc_dyn->rect;
rct->ymin = ((rct->ymin - v2d->mask.ymax) * scaletabs) + v2d->mask.ymax;
rct->ymax = ((rct->ymax - v2d->mask.ymax) * scaletabs) + v2d->mask.ymax;
}
do_scaletabs = true;
}
/* Begin drawing. */
GPU_line_smooth(true);
uint pos = GPU_vertformat_attr_add(
immVertexFormat(), "pos", GPU_COMP_I32, 2, GPU_FETCH_INT_TO_FLOAT);
immBindBuiltinProgram(GPU_SHADER_2D_UNIFORM_COLOR);
/* Draw the background. */
if (is_alpha) {
GPU_blend(GPU_BLEND_ALPHA);
immUniformColor4ubv(theme_col_tab_bg);
}
else {
immUniformColor3ubv(theme_col_tab_bg);
}
if (is_left) {
immRecti(
pos, v2d->mask.xmin, v2d->mask.ymin, v2d->mask.xmin + category_tabs_width, v2d->mask.ymax);
}
else {
immRecti(
pos, v2d->mask.xmax - category_tabs_width, v2d->mask.ymin, v2d->mask.xmax, v2d->mask.ymax);
}
if (is_alpha) {
GPU_blend(GPU_BLEND_NONE);
}
immUnbindProgram();
LISTBASE_FOREACH (PanelCategoryDyn *, pc_dyn, &region->panels_category) {
const rcti *rct = &pc_dyn->rect;
const char *category_id = pc_dyn->idname;
const char *category_id_draw = IFACE_(category_id);
const int category_width = BLI_rcti_size_y(rct) - (tab_v_pad_text * 2);
size_t category_draw_len = BLF_DRAW_STR_DUMMY_MAX;
#if 0
int category_width = BLF_width(fontid, category_id_draw, BLF_DRAW_STR_DUMMY_MAX);
#endif
const bool is_active = STREQ(category_id, category_id_active);
GPU_blend(GPU_BLEND_ALPHA);
#ifdef USE_FLAT_INACTIVE
/* Draw line between inactive tabs. */
if (is_active == false && is_active_prev == false && pc_dyn->prev) {
pos = GPU_vertformat_attr_add(
immVertexFormat(), "pos", GPU_COMP_I32, 2, GPU_FETCH_INT_TO_FLOAT);
immBindBuiltinProgram(GPU_SHADER_2D_UNIFORM_COLOR);
immUniformColor3fvAlpha(theme_col_tab_outline, 0.3f);
immRecti(pos,
is_left ? v2d->mask.xmin + (category_tabs_width / 5) :
v2d->mask.xmax - (category_tabs_width / 5),
rct->ymax + px,
is_left ? (v2d->mask.xmin + category_tabs_width) - (category_tabs_width / 5) :
(v2d->mask.xmax - category_tabs_width) + (category_tabs_width / 5),
rct->ymax + (px * 3));
immUnbindProgram();
}
is_active_prev = is_active;
if (is_active)
#endif
{
/* Draw filled rectangle and outline for tab. */
UI_draw_roundbox_corner_set(roundboxtype);
UI_draw_roundbox_4fv(
&(const rctf){
.xmin = rct->xmin,
.xmax = rct->xmax,
.ymin = rct->ymin,
.ymax = rct->ymax,
},
true,
tab_curve_radius,
is_active ? theme_col_tab_active : theme_col_tab_inactive);
UI_draw_roundbox_4fv(
&(const rctf){
.xmin = rct->xmin,
.xmax = rct->xmax,
.ymin = rct->ymin,
.ymax = rct->ymax,
},
false,
tab_curve_radius,
theme_col_tab_outline);
/* Disguise the outline on one side to join the tab to the panel. */
pos = GPU_vertformat_attr_add(
immVertexFormat(), "pos", GPU_COMP_I32, 2, GPU_FETCH_INT_TO_FLOAT);
immBindBuiltinProgram(GPU_SHADER_2D_UNIFORM_COLOR);
immUniformColor4fv(is_active ? theme_col_tab_active : theme_col_tab_inactive);
immRecti(pos,
is_left ? rct->xmax - px : rct->xmin,
rct->ymin + px,
is_left ? rct->xmax : rct->xmin + px,
rct->ymax - px);
immUnbindProgram();
}
/* Tab titles. */
if (do_scaletabs) {
category_draw_len = BLF_width_to_strlen(
fontid, category_id_draw, category_draw_len, category_width, NULL);
}
BLF_position(fontid, rct->xmax - text_v_ofs, rct->ymin + tab_v_pad_text, 0.0f);
BLF_color3ubv(fontid, theme_col_text);
BLF_draw(fontid, category_id_draw, category_draw_len);
GPU_blend(GPU_BLEND_NONE);
/* Not essential, but allows events to be handled right up to the region edge (T38171). */
if (is_left) {
pc_dyn->rect.xmin = v2d->mask.xmin;
}
else {
pc_dyn->rect.xmax = v2d->mask.xmax;
}
}
GPU_line_smooth(false);
BLF_disable(fontid, BLF_ROTATION);
if (fstyle->kerning == 1) {
BLF_disable(fstyle->uifont_id, BLF_KERNING_DEFAULT);
}
}
#undef TABS_PADDING_BETWEEN_FACTOR
#undef TABS_PADDING_TEXT_FACTOR
/** \} */
/* -------------------------------------------------------------------- */
/** \name Panel Alignment
* \{ */
static int get_panel_size_y(const Panel *panel)
{
if (panel->type && (panel->type->flag & PANEL_TYPE_NO_HEADER)) {
return panel->sizey;
}
return PNL_HEADER + panel->sizey;
}
static int get_panel_real_size_y(const Panel *panel)
{
const int sizey = UI_panel_is_closed(panel) ? 0 : panel->sizey;
if (panel->type && (panel->type->flag & PANEL_TYPE_NO_HEADER)) {
return sizey;
}
return PNL_HEADER + sizey;
}
int UI_panel_size_y(const Panel *panel)
{
return get_panel_real_size_y(panel);
}
/**
* This function is needed because #uiBlock and Panel itself don't
* change #Panel.sizey or location when closed.
*/
static int get_panel_real_ofsy(Panel *panel)
{
if (UI_panel_is_closed(panel)) {
return panel->ofsy + panel->sizey;
}
return panel->ofsy;
}
bool UI_panel_is_dragging(const Panel *panel)
{
return panel->runtime_flag & PANEL_IS_DRAG_DROP;
}
/**
* \note about sorting:
* The #Panel.sortorder has a lower value for new panels being added.
* however, that only works to insert a single panel, when more new panels get
* added the coordinates of existing panels and the previously stored to-be-inserted
* panels do not match for sorting.
*/
static int find_highest_panel(const void *a, const void *b)
{
const Panel *panel_a = ((PanelSort *)a)->panel;
const Panel *panel_b = ((PanelSort *)b)->panel;
/* Stick uppermost header-less panels to the top of the region -
* prevent them from being sorted (multiple header-less panels have to be sorted though). */
if (panel_a->type->flag & PANEL_TYPE_NO_HEADER && panel_b->type->flag & PANEL_TYPE_NO_HEADER) {
/* Pass the no-header checks and check for `ofsy` and #Panel.sortorder below. */
}
else if (panel_a->type->flag & PANEL_TYPE_NO_HEADER) {
return -1;
}
else if (panel_b->type->flag & PANEL_TYPE_NO_HEADER) {
return 1;
}
if (panel_a->ofsy + panel_a->sizey < panel_b->ofsy + panel_b->sizey) {
return 1;
}
if (panel_a->ofsy + panel_a->sizey > panel_b->ofsy + panel_b->sizey) {
return -1;
}
if (panel_a->sortorder > panel_b->sortorder) {
return 1;
}
if (panel_a->sortorder < panel_b->sortorder) {
return -1;
}
return 0;
}
static int compare_panel(const void *a, const void *b)
{
const Panel *panel_a = ((PanelSort *)a)->panel;
const Panel *panel_b = ((PanelSort *)b)->panel;
if (panel_a->sortorder > panel_b->sortorder) {
return 1;
}
if (panel_a->sortorder < panel_b->sortorder) {
return -1;
}
return 0;
}
static void align_sub_panels(Panel *panel)
{
/* Position sub panels. */
int ofsy = panel->ofsy + panel->sizey - panel->blocksizey;
LISTBASE_FOREACH (Panel *, pachild, &panel->children) {
if (pachild->runtime_flag & PANEL_ACTIVE) {
pachild->ofsx = panel->ofsx;
pachild->ofsy = ofsy - get_panel_size_y(pachild);
ofsy -= get_panel_real_size_y(pachild);
if (pachild->children.first) {
align_sub_panels(pachild);
}
}
}
}
/**
* Calculate the position and order of panels as they are opened, closed, and dragged.
*/
static bool uiAlignPanelStep(ARegion *region, const float factor, const bool drag)
{
/* Count active panels. */
int active_panels_len = 0;
LISTBASE_FOREACH (Panel *, panel, &region->panels) {
if (panel->runtime_flag & PANEL_ACTIVE) {
/* These panels should have types since they are currently displayed to the user. */
BLI_assert(panel->type != NULL);
active_panels_len++;
}
}
if (active_panels_len == 0) {
return false;
}
/* Sort panels. */
PanelSort *panel_sort = MEM_mallocN(sizeof(PanelSort) * active_panels_len, __func__);
{
PanelSort *ps = panel_sort;
LISTBASE_FOREACH (Panel *, panel, &region->panels) {
if (panel->runtime_flag & PANEL_ACTIVE) {
ps->panel = panel;
ps++;
}
}
}
if (drag) {
/* While dragging, sort based on location and update #Panel.sortorder. */
qsort(panel_sort, active_panels_len, sizeof(PanelSort), find_highest_panel);
for (int i = 0; i < active_panels_len; i++) {
panel_sort[i].panel->sortorder = i;
}
}
else {
/* Otherwise use #Panel.sortorder. */
qsort(panel_sort, active_panels_len, sizeof(PanelSort), compare_panel);
}
/* X offset. */
const int region_offset_x = panel_region_offset_x_get(region);
for (int i = 0; i < active_panels_len; i++) {
PanelSort *ps = &panel_sort[i];
const bool use_box = ps->panel->type->flag & PANEL_TYPE_DRAW_BOX;
ps->panel->runtime.region_ofsx = region_offset_x;
ps->new_offset_x = region_offset_x + ((use_box) ? UI_PANEL_BOX_STYLE_MARGIN : 0);
}
/* Y offset. */
for (int i = 0, y = 0; i < active_panels_len; i++) {
PanelSort *ps = &panel_sort[i];
y -= get_panel_real_size_y(ps->panel);
const bool use_box = ps->panel->type->flag & PANEL_TYPE_DRAW_BOX;
if (use_box) {
y -= UI_PANEL_BOX_STYLE_MARGIN;
}
ps->new_offset_y = y;
/* The header still draws offset by the size of closed panels, so apply the offset here. */
if (UI_panel_is_closed(ps->panel)) {
panel_sort[i].new_offset_y -= ps->panel->sizey;
}
}
/* Interpolate based on the input factor. */
bool changed = false;
for (int i = 0; i < active_panels_len; i++) {
PanelSort *ps = &panel_sort[i];
if (ps->panel->flag & PNL_SELECT) {
continue;
}
if (ps->new_offset_x != ps->panel->ofsx) {
const float x = interpf((float)ps->new_offset_x, (float)ps->panel->ofsx, factor);
ps->panel->ofsx = round_fl_to_int(x);
changed = true;
}
if (ps->new_offset_y != ps->panel->ofsy) {
const float y = interpf((float)ps->new_offset_y, (float)ps->panel->ofsy, factor);
ps->panel->ofsy = round_fl_to_int(y);
changed = true;
}
}
/* Set locations for tabbed and sub panels. */
LISTBASE_FOREACH (Panel *, panel, &region->panels) {
if (panel->runtime_flag & PANEL_ACTIVE) {
if (panel->children.first) {
align_sub_panels(panel);
}
}
}
MEM_freeN(panel_sort);
return changed;
}
static void ui_panels_size(ARegion *region, int *r_x, int *r_y)
{
int sizex = 0;
int sizey = 0;
/* Compute size taken up by panels, for setting in view2d. */
LISTBASE_FOREACH (Panel *, panel, &region->panels) {
if (panel->runtime_flag & PANEL_ACTIVE) {
const int pa_sizex = panel->ofsx + panel->sizex;
const int pa_sizey = get_panel_real_ofsy(panel);
sizex = max_ii(sizex, pa_sizex);
sizey = min_ii(sizey, pa_sizey);
}
}
if (sizex == 0) {
sizex = UI_PANEL_WIDTH;
}
if (sizey == 0) {
sizey = -UI_PANEL_WIDTH;
}
*r_x = sizex;
*r_y = sizey;
}
static void ui_do_animate(bContext *C, Panel *panel)
{
uiHandlePanelData *data = panel->activedata;
ARegion *region = CTX_wm_region(C);
float fac = (PIL_check_seconds_timer() - data->starttime) / ANIMATION_TIME;
fac = min_ff(sqrtf(fac), 1.0f);
if (uiAlignPanelStep(region, fac, false)) {
ED_region_tag_redraw(region);
}
else {
if (UI_panel_is_dragging(panel)) {
/* Note: doing this in #panel_activate_state would require
* removing `const` for context in many other places. */
reorder_instanced_panel_list(C, region, panel);
}
panel_activate_state(C, panel, PANEL_STATE_EXIT);
}
}
static void panels_layout_begin_clear_flags(ListBase *lb)
{
LISTBASE_FOREACH (Panel *, panel, lb) {
/* Flags to copy over to the next layout pass. */
const short flag_copy = PANEL_USE_CLOSED_FROM_SEARCH | PANEL_IS_DRAG_DROP;
const bool was_active = panel->runtime_flag & PANEL_ACTIVE;
const bool was_closed = UI_panel_is_closed(panel);
panel->runtime_flag &= flag_copy;
SET_FLAG_FROM_TEST(panel->runtime_flag, was_active, PANEL_WAS_ACTIVE);
SET_FLAG_FROM_TEST(panel->runtime_flag, was_closed, PANEL_WAS_CLOSED);
panels_layout_begin_clear_flags(&panel->children);
}
}
void UI_panels_begin(const bContext *UNUSED(C), ARegion *region)
{
/* Set all panels as inactive, so that at the end we know which ones were used. Also
* clear other flags so we know later that their values were set for the current redraw. */
panels_layout_begin_clear_flags(&region->panels);
}
void UI_panels_end(const bContext *C, ARegion *region, int *r_x, int *r_y)
{
ScrArea *area = CTX_wm_area(C);
region_panels_set_expansion_from_list_data(C, region);
const bool region_search_filter_active = region->flag & RGN_FLAG_SEARCH_FILTER_ACTIVE;
if (properties_space_needs_realign(area, region)) {
region_panels_set_expansion_from_search_filter(C, region, region_search_filter_active);
}
else if (region->flag & RGN_FLAG_SEARCH_FILTER_UPDATE) {
region_panels_set_expansion_from_search_filter(C, region, region_search_filter_active);
}
if (region->flag & RGN_FLAG_SEARCH_FILTER_ACTIVE) {
/* Clean up the extra panels and buttons created for searching. */
region_panels_remove_invisible_layouts(region);
}
LISTBASE_FOREACH (Panel *, panel, &region->panels) {
if (panel->runtime_flag & PANEL_ACTIVE) {
BLI_assert(panel->runtime.block != NULL);
panel_calculate_size_recursive(region, panel);
}
}
/* Offset contents. */
LISTBASE_FOREACH (uiBlock *, block, &region->uiblocks) {
if (block->active && block->panel) {
ui_offset_panel_block(block);
}
}
/* Re-align, possibly with animation. */
Panel *panel;
if (panels_need_realign(area, region, &panel)) {
if (panel) {
panel_activate_state(C, panel, PANEL_STATE_ANIMATION);
}
else {
uiAlignPanelStep(region, 1.0, false);
}
}
/* Compute size taken up by panels. */
ui_panels_size(region, r_x, r_y);
}
/** \} */
/* -------------------------------------------------------------------- */
/** \name Panel Dragging
* \{ */
#define DRAG_REGION_PAD (PNL_HEADER * 0.5)
static void ui_do_drag(const bContext *C, const wmEvent *event, Panel *panel)
{
uiHandlePanelData *data = panel->activedata;
ARegion *region = CTX_wm_region(C);
/* Keep the drag position in the region with a small pad to keep the panel visible. */
const int y = clamp_i(event->y, region->winrct.ymin, region->winrct.ymax + DRAG_REGION_PAD);
float dy = (float)(y - data->starty);
/* Adjust for region zoom. */
dy *= BLI_rctf_size_y(&region->v2d.cur) / (float)BLI_rcti_size_y(&region->winrct);
/* Add the movement of the view due to edge scrolling while dragging. */
dy += ((float)region->v2d.cur.ymin - data->start_cur_ymin);
panel->ofsy = data->startofsy + round_fl_to_int(dy);
uiAlignPanelStep(region, 0.2f, true);
ED_region_tag_redraw(region);
}
#undef DRAG_REGION_PAD
/** \} */
/* -------------------------------------------------------------------- */
/** \name Region Level Panel Interaction
* \{ */
static uiPanelMouseState ui_panel_mouse_state_get(const uiBlock *block,
const Panel *panel,
const int mx,
const int my)
{
if (!IN_RANGE((float)mx, block->rect.xmin, block->rect.xmax)) {
return PANEL_MOUSE_OUTSIDE;
}
if (IN_RANGE((float)my, block->rect.ymax, block->rect.ymax + PNL_HEADER)) {
return PANEL_MOUSE_INSIDE_HEADER;
}
if (!UI_panel_is_closed(panel)) {
if (IN_RANGE((float)my, block->rect.ymin, block->rect.ymax + PNL_HEADER)) {
return PANEL_MOUSE_INSIDE_CONTENT;
}
}
return PANEL_MOUSE_OUTSIDE;
}
typedef struct uiPanelDragCollapseHandle {
bool was_first_open;
int xy_init[2];
} uiPanelDragCollapseHandle;
static void ui_panel_drag_collapse_handler_remove(bContext *UNUSED(C), void *userdata)
{
uiPanelDragCollapseHandle *dragcol_data = userdata;
MEM_freeN(dragcol_data);
}
static void ui_panel_drag_collapse(const bContext *C,
const uiPanelDragCollapseHandle *dragcol_data,
const int xy_dst[2])
{
ARegion *region = CTX_wm_region(C);
LISTBASE_FOREACH (uiBlock *, block, &region->uiblocks) {
float xy_a_block[2] = {UNPACK2(dragcol_data->xy_init)};
float xy_b_block[2] = {UNPACK2(xy_dst)};
Panel *panel = block->panel;
if (panel == NULL || (panel->type && (panel->type->flag & PANEL_TYPE_NO_HEADER))) {
continue;
}
const int oldflag = panel->flag;
/* Lock axis. */
xy_b_block[0] = dragcol_data->xy_init[0];
/* Use cursor coords in block space. */
ui_window_to_block_fl(region, block, &xy_a_block[0], &xy_a_block[1]);
ui_window_to_block_fl(region, block, &xy_b_block[0], &xy_b_block[1]);
/* Set up `rect` to match header size. */
rctf rect = block->rect;
rect.ymin = rect.ymax;
rect.ymax = rect.ymin + PNL_HEADER;
/* Touch all panels between last mouse coordinate and the current one. */
if (BLI_rctf_isect_segment(&rect, xy_a_block, xy_b_block)) {
/* Force panel to open or close. */
panel->runtime_flag &= ~PANEL_USE_CLOSED_FROM_SEARCH;
SET_FLAG_FROM_TEST(panel->flag, dragcol_data->was_first_open, PNL_CLOSED);
/* If panel->flag has changed this means a panel was opened/closed here. */
if (panel->flag != oldflag) {
panel_activate_state(C, panel, PANEL_STATE_ANIMATION);
}
}
}
/* Update the instanced panel data expand flags with the changes made here. */
set_panels_list_data_expand_flag(C, region);
}
/**
* Panel drag-collapse (modal handler).
* Clicking and dragging over panels toggles their collapse state based on the panel
* that was first dragged over. If it was open all affected panels including the initial
* one are closed and vice versa.
*/
static int ui_panel_drag_collapse_handler(bContext *C, const wmEvent *event, void *userdata)
{
wmWindow *win = CTX_wm_window(C);
uiPanelDragCollapseHandle *dragcol_data = userdata;
short retval = WM_UI_HANDLER_CONTINUE;
switch (event->type) {
case MOUSEMOVE:
ui_panel_drag_collapse(C, dragcol_data, &event->x);
retval = WM_UI_HANDLER_BREAK;
break;
case LEFTMOUSE:
if (event->val == KM_RELEASE) {
/* Done! */
WM_event_remove_ui_handler(&win->modalhandlers,
ui_panel_drag_collapse_handler,
ui_panel_drag_collapse_handler_remove,
dragcol_data,
true);
ui_panel_drag_collapse_handler_remove(C, dragcol_data);
}
/* Don't let any left-mouse event fall through! */
retval = WM_UI_HANDLER_BREAK;
break;
}
return retval;
}
static void ui_panel_drag_collapse_handler_add(const bContext *C, const bool was_open)
{
wmWindow *win = CTX_wm_window(C);
const wmEvent *event = win->eventstate;
uiPanelDragCollapseHandle *dragcol_data = MEM_mallocN(sizeof(*dragcol_data), __func__);
dragcol_data->was_first_open = was_open;
copy_v2_v2_int(dragcol_data->xy_init, &event->x);
WM_event_add_ui_handler(C,
&win->modalhandlers,
ui_panel_drag_collapse_handler,
ui_panel_drag_collapse_handler_remove,
dragcol_data,
0);
}
/**
* Supposing the block has a panel and isn't a menu, handle opening, closing, pinning, etc.
* Code currently assumes layout style for location of widgets
*
* \param mx: The mouse x coordinate, in panel space.
*/
static void ui_handle_panel_header(const bContext *C,
const uiBlock *block,
const int mx,
const int event_type,
const short ctrl,
const short shift)
{
Panel *panel = block->panel;
ARegion *region = CTX_wm_region(C);
BLI_assert(panel->type != NULL);
BLI_assert(!(panel->type->flag & PANEL_TYPE_NO_HEADER));
const bool is_subpanel = (panel->type->parent != NULL);
const bool use_pin = UI_panel_category_is_visible(region) && !is_subpanel;
const bool show_pin = use_pin && (panel->flag & PNL_PIN);
const bool show_drag = !is_subpanel;
/* Handle panel pinning. */
if (use_pin && ELEM(event_type, EVT_RETKEY, EVT_PADENTER, LEFTMOUSE) && shift) {
panel->flag ^= PNL_PIN;
ED_region_tag_redraw(region);
return;
}
float expansion_area_xmax = block->rect.xmax;
if (show_drag) {
expansion_area_xmax -= (PNL_ICON * 1.5f);
}
if (show_pin) {
expansion_area_xmax -= PNL_ICON;
}
/* Collapse and expand panels. */
if (ELEM(event_type, EVT_RETKEY, EVT_PADENTER, EVT_AKEY) || mx < expansion_area_xmax) {
if (ctrl && !is_subpanel) {
/* For parent panels, collapse all other panels or toggle children. */
if (UI_panel_is_closed(panel) || BLI_listbase_is_empty(&panel->children)) {
panels_collapse_all(region, panel);
/* Reset the view - we don't want to display a view without content. */
UI_view2d_offset(&region->v2d, 0.0f, 1.0f);
}
else {
/* If a panel has sub-panels and it's open, toggle the expansion
* of the sub-panels (based on the expansion of the first sub-panel). */
Panel *first_child = panel->children.first;
BLI_assert(first_child != NULL);
panel_set_flag_recursive(panel, PNL_CLOSED, !UI_panel_is_closed(first_child));
panel->flag |= PNL_CLOSED;
}
}
SET_FLAG_FROM_TEST(panel->flag, !UI_panel_is_closed(panel), PNL_CLOSED);
if (event_type == LEFTMOUSE) {
ui_panel_drag_collapse_handler_add(C, UI_panel_is_closed(panel));
}
/* Set panel custom data (modifier) active when expanding subpanels, but not top-level
* panels to allow collapsing and expanding without setting the active element. */
if (is_subpanel) {
panel_custom_data_active_set(panel);
}
set_panels_list_data_expand_flag(C, region);
panel_activate_state(C, panel, PANEL_STATE_ANIMATION);
return;
}
/* Handle panel dragging. For now don't allow dragging in floating regions. */
if (show_drag && !(region->alignment == RGN_ALIGN_FLOAT)) {
const float drag_area_xmin = block->rect.xmax - (PNL_ICON * 1.5f);
const float drag_area_xmax = block->rect.xmax;
if (IN_RANGE(mx, drag_area_xmin, drag_area_xmax)) {
panel_activate_state(C, panel, PANEL_STATE_DRAG);
return;
}
}
/* Handle panel unpinning. */
if (show_pin) {
const float pin_area_xmin = expansion_area_xmax;
const float pin_area_xmax = pin_area_xmin + PNL_ICON;
if (IN_RANGE(mx, pin_area_xmin, pin_area_xmax)) {
panel->flag ^= PNL_PIN;
ED_region_tag_redraw(region);
return;
}
}
}
bool UI_panel_category_is_visible(const ARegion *region)
{
/* Check for more than one category. */
return region->panels_category.first &&
region->panels_category.first != region->panels_category.last;
}
PanelCategoryDyn *UI_panel_category_find(const ARegion *region, const char *idname)
{
return BLI_findstring(&region->panels_category, idname, offsetof(PanelCategoryDyn, idname));
}
PanelCategoryStack *UI_panel_category_active_find(ARegion *region, const char *idname)
{
return BLI_findstring(
&region->panels_category_active, idname, offsetof(PanelCategoryStack, idname));
}
static void ui_panel_category_active_set(ARegion *region, const char *idname, bool fallback)
{
ListBase *lb = &region->panels_category_active;
PanelCategoryStack *pc_act = UI_panel_category_active_find(region, idname);
if (pc_act) {
BLI_remlink(lb, pc_act);
}
else {
pc_act = MEM_callocN(sizeof(PanelCategoryStack), __func__);
BLI_strncpy(pc_act->idname, idname, sizeof(pc_act->idname));
}
if (fallback) {
/* For fall-backs, add at the end so explicitly chosen categories have priority. */
BLI_addtail(lb, pc_act);
}
else {
BLI_addhead(lb, pc_act);
}
/* Validate all active panels. We could do this on load, they are harmless -
* but we should remove them somewhere.
* (Add-ons could define panels and gather cruft over time). */
{
PanelCategoryStack *pc_act_next;
/* intentionally skip first */
pc_act_next = pc_act->next;
while ((pc_act = pc_act_next)) {
pc_act_next = pc_act->next;
if (!BLI_findstring(
&region->type->paneltypes, pc_act->idname, offsetof(PanelType, category))) {
BLI_remlink(lb, pc_act);
MEM_freeN(pc_act);
}
}
}
}
void UI_panel_category_active_set(ARegion *region, const char *idname)
{
ui_panel_category_active_set(region, idname, false);
}
void UI_panel_category_active_set_default(ARegion *region, const char *idname)
{
if (!UI_panel_category_active_find(region, idname)) {
ui_panel_category_active_set(region, idname, true);
}
}
const char *UI_panel_category_active_get(ARegion *region, bool set_fallback)
{
LISTBASE_FOREACH (PanelCategoryStack *, pc_act, &region->panels_category_active) {
if (UI_panel_category_find(region, pc_act->idname)) {
return pc_act->idname;
}
}
if (set_fallback) {
PanelCategoryDyn *pc_dyn = region->panels_category.first;
if (pc_dyn) {
ui_panel_category_active_set(region, pc_dyn->idname, true);
return pc_dyn->idname;
}
}
return NULL;
}
static PanelCategoryDyn *panel_categories_find_mouse_over(ARegion *region, const wmEvent *event)
{
LISTBASE_FOREACH (PanelCategoryDyn *, ptd, &region->panels_category) {
if (BLI_rcti_isect_pt(&ptd->rect, event->mval[0], event->mval[1])) {
return ptd;
}
}
return NULL;
}
void UI_panel_category_add(ARegion *region, const char *name)
{
PanelCategoryDyn *pc_dyn = MEM_callocN(sizeof(*pc_dyn), __func__);
BLI_addtail(&region->panels_category, pc_dyn);
BLI_strncpy(pc_dyn->idname, name, sizeof(pc_dyn->idname));
/* 'pc_dyn->rect' must be set on draw. */
}
void UI_panel_category_clear_all(ARegion *region)
{
BLI_freelistN(&region->panels_category);
}
static int ui_handle_panel_category_cycling(const wmEvent *event,
ARegion *region,
const uiBut *active_but)
{
const bool is_mousewheel = ELEM(event->type, WHEELUPMOUSE, WHEELDOWNMOUSE);
const bool inside_tabregion =
((RGN_ALIGN_ENUM_FROM_MASK(region->alignment) != RGN_ALIGN_RIGHT) ?
(event->mval[0] < ((PanelCategoryDyn *)region->panels_category.first)->rect.xmax) :
(event->mval[0] > ((PanelCategoryDyn *)region->panels_category.first)->rect.xmin));
/* If mouse is inside non-tab region, ctrl key is required. */
if (is_mousewheel && !event->ctrl && !inside_tabregion) {
return WM_UI_HANDLER_CONTINUE;
}
if (active_but && ui_but_supports_cycling(active_but)) {
/* Skip - exception to make cycling buttons using ctrl+mousewheel work in tabbed regions. */
}
else {
const char *category = UI_panel_category_active_get(region, false);
if (LIKELY(category)) {
PanelCategoryDyn *pc_dyn = UI_panel_category_find(region, category);
if (LIKELY(pc_dyn)) {
if (is_mousewheel) {
/* We can probably get rid of this and only allow Ctrl-Tabbing. */
pc_dyn = (event->type == WHEELDOWNMOUSE) ? pc_dyn->next : pc_dyn->prev;
}
else {
const bool backwards = event->shift;
pc_dyn = backwards ? pc_dyn->prev : pc_dyn->next;
if (!pc_dyn) {
/* Proper cyclic behavior, back to first/last category (only used for ctrl+tab). */
pc_dyn = backwards ? region->panels_category.last : region->panels_category.first;
}
}
if (pc_dyn) {
/* Intentionally don't reset scroll in this case,
* allowing for quick browsing between tabs. */
UI_panel_category_active_set(region, pc_dyn->idname);
ED_region_tag_redraw(region);
}
}
}
return WM_UI_HANDLER_BREAK;
}
return WM_UI_HANDLER_CONTINUE;
}
/**
* Handle region panel events like opening and closing panels, changing categories, etc.
*
* \note Could become a modal key-map.
*/
int ui_handler_panel_region(bContext *C,
const wmEvent *event,
ARegion *region,
const uiBut *active_but)
{
/* Mouse-move events are handled by separate handlers for dragging and drag collapsing. */
if (ELEM(event->type, MOUSEMOVE, INBETWEEN_MOUSEMOVE)) {
return WM_UI_HANDLER_CONTINUE;
}
/* We only use KM_PRESS events in this function, so it's simpler to return early. */
if (event->val != KM_PRESS) {
return WM_UI_HANDLER_CONTINUE;
}
/* Scroll-bars can overlap panels now, they have handling priority. */
if (UI_view2d_mouse_in_scrollers(region, &region->v2d, event->x, event->y)) {
return WM_UI_HANDLER_CONTINUE;
}
int retval = WM_UI_HANDLER_CONTINUE;
/* Handle category tabs. */
if (UI_panel_category_is_visible(region)) {
if (event->type == LEFTMOUSE) {
PanelCategoryDyn *pc_dyn = panel_categories_find_mouse_over(region, event);
if (pc_dyn) {
UI_panel_category_active_set(region, pc_dyn->idname);
ED_region_tag_redraw(region);
/* Reset scroll to the top (T38348). */
UI_view2d_offset(&region->v2d, -1.0f, 1.0f);
retval = WM_UI_HANDLER_BREAK;
}
}
else if ((event->type == EVT_TABKEY && event->ctrl) ||
ELEM(event->type, WHEELUPMOUSE, WHEELDOWNMOUSE)) {
/* Cycle tabs. */
retval = ui_handle_panel_category_cycling(event, region, active_but);
}
}
if (retval == WM_UI_HANDLER_BREAK) {
return retval;
}
const bool region_has_active_button = (ui_region_find_active_but(region) != NULL);
LISTBASE_FOREACH (uiBlock *, block, &region->uiblocks) {
Panel *panel = block->panel;
if (panel == NULL || panel->type == NULL) {
continue;
}
/* We can't expand or collapse panels without headers, they would disappear. */
if (panel->type->flag & PANEL_TYPE_NO_HEADER) {
continue;
}
int mx = event->x;
int my = event->y;
ui_window_to_block(region, block, &mx, &my);
const uiPanelMouseState mouse_state = ui_panel_mouse_state_get(block, panel, mx, my);
if (mouse_state != PANEL_MOUSE_OUTSIDE) {
/* Mark panels that have been interacted with so their expansion
* doesn't reset when property search finishes. */
SET_FLAG_FROM_TEST(panel->flag, UI_panel_is_closed(panel), PNL_CLOSED);
panel->runtime_flag &= ~PANEL_USE_CLOSED_FROM_SEARCH;
/* The panel collapse / expand key "A" is special as it takes priority over
* active button handling. */
if (event->type == EVT_AKEY && !IS_EVENT_MOD(event, shift, ctrl, alt, oskey)) {
retval = WM_UI_HANDLER_BREAK;
ui_handle_panel_header(C, block, mx, event->type, event->ctrl, event->shift);
break;
}
}
/* Don't do any other panel handling with an active button. */
if (region_has_active_button) {
continue;
}
if (mouse_state == PANEL_MOUSE_INSIDE_HEADER) {
/* All mouse clicks inside panel headers should return in break. */
if (ELEM(event->type, EVT_RETKEY, EVT_PADENTER, LEFTMOUSE)) {
retval = WM_UI_HANDLER_BREAK;
ui_handle_panel_header(C, block, mx, event->type, event->ctrl, event->shift);
}
else if (event->type == RIGHTMOUSE) {
retval = WM_UI_HANDLER_BREAK;
ui_popup_context_menu_for_panel(C, region, block->panel);
}
break;
}
}
return retval;
}
static void ui_panel_custom_data_set_recursive(Panel *panel, PointerRNA *custom_data)
{
panel->runtime.custom_data_ptr = custom_data;
LISTBASE_FOREACH (Panel *, child_panel, &panel->children) {
ui_panel_custom_data_set_recursive(child_panel, custom_data);
}
}
void UI_panel_custom_data_set(Panel *panel, PointerRNA *custom_data)
{
BLI_assert(panel->type != NULL);
/* Free the old custom data, which should be shared among all of the panel's sub-panels. */
if (panel->runtime.custom_data_ptr != NULL) {
MEM_freeN(panel->runtime.custom_data_ptr);
}
ui_panel_custom_data_set_recursive(panel, custom_data);
}
PointerRNA *UI_panel_custom_data_get(const Panel *panel)
{
return panel->runtime.custom_data_ptr;
}
PointerRNA *UI_region_panel_custom_data_under_cursor(const bContext *C, const wmEvent *event)
{
ARegion *region = CTX_wm_region(C);
LISTBASE_FOREACH (uiBlock *, block, &region->uiblocks) {
Panel *panel = block->panel;
if (panel == NULL) {
continue;
}
int mx = event->x;
int my = event->y;
ui_window_to_block(region, block, &mx, &my);
const int mouse_state = ui_panel_mouse_state_get(block, panel, mx, my);
if (ELEM(mouse_state, PANEL_MOUSE_INSIDE_CONTENT, PANEL_MOUSE_INSIDE_HEADER)) {
return UI_panel_custom_data_get(panel);
}
}
return NULL;
}
/** \} */
/* -------------------------------------------------------------------- */
/** \name Window Level Modal Panel Interaction
* \{ */
/* Note, this is modal handler and should not swallow events for animation. */
static int ui_handler_panel(bContext *C, const wmEvent *event, void *userdata)
{
Panel *panel = userdata;
uiHandlePanelData *data = panel->activedata;
/* Verify if we can stop. */
if (event->type == LEFTMOUSE && event->val == KM_RELEASE) {
panel_activate_state(C, panel, PANEL_STATE_ANIMATION);
}
else if (event->type == MOUSEMOVE) {
if (data->state == PANEL_STATE_DRAG) {
ui_do_drag(C, event, panel);
}
}
else if (event->type == TIMER && event->customdata == data->animtimer) {
if (data->state == PANEL_STATE_ANIMATION) {
ui_do_animate(C, panel);
}
else if (data->state == PANEL_STATE_DRAG) {
ui_do_drag(C, event, panel);
}
}
data = panel->activedata;
if (data && data->state == PANEL_STATE_ANIMATION) {
return WM_UI_HANDLER_CONTINUE;
}
return WM_UI_HANDLER_BREAK;
}
static void ui_handler_remove_panel(bContext *C, void *userdata)
{
Panel *panel = userdata;
panel_activate_state(C, panel, PANEL_STATE_EXIT);
}
static void panel_handle_data_ensure(const bContext *C,
wmWindow *win,
const ARegion *region,
Panel *panel,
const uiHandlePanelState state)
{
if (panel->activedata == NULL) {
panel->activedata = MEM_callocN(sizeof(uiHandlePanelData), __func__);
WM_event_add_ui_handler(
C, &win->modalhandlers, ui_handler_panel, ui_handler_remove_panel, panel, 0);
}
uiHandlePanelData *data = panel->activedata;
data->animtimer = WM_event_add_timer(CTX_wm_manager(C), win, TIMER, ANIMATION_INTERVAL);
data->state = state;
data->startx = win->eventstate->x;
data->starty = win->eventstate->y;
data->startofsx = panel->ofsx;
data->startofsy = panel->ofsy;
data->start_cur_xmin = region->v2d.cur.xmin;
data->start_cur_ymin = region->v2d.cur.ymin;
data->starttime = PIL_check_seconds_timer();
}
/**
* \note "select" and "drag drop" flags: First, the panel is "picked up" and both flags are set.
* Then when the mouse releases and the panel starts animating to its aligned position, PNL_SELECT
* is unset. When the animation finishes, PANEL_IS_DRAG_DROP is cleared.
*/
static void panel_activate_state(const bContext *C, Panel *panel, const uiHandlePanelState state)
{
uiHandlePanelData *data = panel->activedata;
wmWindow *win = CTX_wm_window(C);
ARegion *region = CTX_wm_region(C);
if (data != NULL && data->state == state) {
return;
}
if (state == PANEL_STATE_DRAG) {
panel_custom_data_active_set(panel);
panel_set_flag_recursive(panel, PNL_SELECT, true);
panel_set_runtime_flag_recursive(panel, PANEL_IS_DRAG_DROP, true);
panel_handle_data_ensure(C, win, region, panel, state);
/* Initiate edge panning during drags for scrolling beyond the initial region view. */
wmOperatorType *ot = WM_operatortype_find("VIEW2D_OT_edge_pan", true);
ui_handle_afterfunc_add_operator(ot, WM_OP_INVOKE_DEFAULT, true);
}
else if (state == PANEL_STATE_ANIMATION) {
panel_set_flag_recursive(panel, PNL_SELECT, false);
panel_handle_data_ensure(C, win, region, panel, state);
}
else if (state == PANEL_STATE_EXIT) {
panel_set_runtime_flag_recursive(panel, PANEL_IS_DRAG_DROP, false);
BLI_assert(data != NULL);
if (data->animtimer) {
WM_event_remove_timer(CTX_wm_manager(C), win, data->animtimer);
data->animtimer = NULL;
}
MEM_freeN(data);
panel->activedata = NULL;
WM_event_remove_ui_handler(
&win->modalhandlers, ui_handler_panel, ui_handler_remove_panel, panel, false);
}
ED_region_tag_redraw(region);
}
/** \} */
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