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blender-archive/source/blender/editors/interface/interface_region_tooltip.c

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/*
* ***** BEGIN GPL LICENSE BLOCK *****
*
* 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) 2008 Blender Foundation.
* All rights reserved.
*
* Contributor(s): Blender Foundation
*
* ***** END GPL LICENSE BLOCK *****
*/
/** \file blender/editors/interface/interface_region_tooltip.c
* \ingroup edinterface
*
* ToolTip Region and Construction
*/
#include <stdarg.h>
#include <stdlib.h>
#include <string.h>
#include <assert.h>
#include "MEM_guardedalloc.h"
#include "DNA_userdef_types.h"
#include "BLI_math.h"
#include "BLI_string.h"
#include "BLI_string_utf8.h"
#include "BLI_rect.h"
#include "BLI_utildefines.h"
#include "BKE_context.h"
#include "BKE_screen.h"
#include "WM_api.h"
#include "WM_types.h"
#include "RNA_access.h"
#include "BIF_gl.h"
#include "UI_interface.h"
#include "BLF_api.h"
#include "BLT_translation.h"
#include "ED_screen.h"
#include "interface_intern.h"
#include "interface_regions_intern.h"
#define UI_TIP_PAD_FAC 1.3f
#define UI_TIP_PADDING (int)(UI_TIP_PAD_FAC * UI_UNIT_Y)
#define UI_TIP_MAXWIDTH 600
typedef struct uiTooltipFormat {
enum {
UI_TIP_STYLE_NORMAL = 0,
UI_TIP_STYLE_HEADER,
UI_TIP_STYLE_MONO,
} style : 3;
enum {
UI_TIP_LC_MAIN = 0, /* primary text */
UI_TIP_LC_VALUE, /* the value of buttons (also shortcuts) */
UI_TIP_LC_ACTIVE, /* titles of active enum values */
UI_TIP_LC_NORMAL, /* regular text */
UI_TIP_LC_PYTHON, /* Python snippet */
UI_TIP_LC_ALERT, /* description of why operator can't run */
} color_id : 4;
int is_pad : 1;
} uiTooltipFormat;
typedef struct uiTooltipField {
char *text;
char *text_suffix;
struct {
uint x_pos; /* x cursor position at the end of the last line */
uint lines; /* number of lines, 1 or more with word-wrap */
} geom;
uiTooltipFormat format;
} uiTooltipField;
#define MAX_TOOLTIP_LINES 8
typedef struct uiTooltipData {
rcti bbox;
uiTooltipField *fields;
uint fields_len;
uiFontStyle fstyle;
int wrap_width;
int toth, lineh;
} uiTooltipData;
#define UI_TIP_LC_MAX 6
BLI_STATIC_ASSERT(UI_TIP_LC_MAX == UI_TIP_LC_ALERT + 1, "invalid lc-max");
BLI_STATIC_ASSERT(sizeof(uiTooltipFormat) <= sizeof(int), "oversize");
static uiTooltipField *text_field_add_only(
uiTooltipData *data)
{
data->fields_len += 1;
data->fields = MEM_recallocN(data->fields, sizeof(*data->fields) * data->fields_len);
return &data->fields[data->fields_len - 1];
}
static uiTooltipField *text_field_add(
uiTooltipData *data,
const uiTooltipFormat *format)
{
uiTooltipField *field = text_field_add_only(data);
field->format = *format;
return field;
}
/* -------------------------------------------------------------------- */
/** \name ToolTip Callbacks (Draw & Free)
* \{ */
static void rgb_tint(
float col[3],
float h, float h_strength,
float v, float v_strength)
{
float col_hsv_from[3];
float col_hsv_to[3];
rgb_to_hsv_v(col, col_hsv_from);
col_hsv_to[0] = h;
col_hsv_to[1] = h_strength;
col_hsv_to[2] = (col_hsv_from[2] * (1.0f - v_strength)) + (v * v_strength);
hsv_to_rgb_v(col_hsv_to, col);
}
static void ui_tooltip_region_draw_cb(const bContext *UNUSED(C), ARegion *ar)
{
const float pad_px = UI_TIP_PADDING;
uiTooltipData *data = ar->regiondata;
uiWidgetColors *theme = ui_tooltip_get_theme();
rcti bbox = data->bbox;
float tip_colors[UI_TIP_LC_MAX][3];
float *main_color = tip_colors[UI_TIP_LC_MAIN]; /* the color from the theme */
float *value_color = tip_colors[UI_TIP_LC_VALUE];
float *active_color = tip_colors[UI_TIP_LC_ACTIVE];
float *normal_color = tip_colors[UI_TIP_LC_NORMAL];
float *python_color = tip_colors[UI_TIP_LC_PYTHON];
float *alert_color = tip_colors[UI_TIP_LC_ALERT];
float background_color[3];
float tone_bg;
int i, multisample_enabled;
/* disable AA, makes widgets too blurry */
multisample_enabled = glIsEnabled(GL_MULTISAMPLE);
if (multisample_enabled)
glDisable(GL_MULTISAMPLE);
wmOrtho2_region_pixelspace(ar);
/* draw background */
ui_draw_tooltip_background(UI_style_get(), NULL, &bbox);
/* set background_color */
rgb_uchar_to_float(background_color, (const unsigned char *)theme->inner);
/* calculate normal_color */
rgb_uchar_to_float(main_color, (const unsigned char *)theme->text);
copy_v3_v3(active_color, main_color);
copy_v3_v3(normal_color, main_color);
copy_v3_v3(python_color, main_color);
copy_v3_v3(alert_color, main_color);
copy_v3_v3(value_color, main_color);
/* find the brightness difference between background and text colors */
tone_bg = rgb_to_grayscale(background_color);
/* tone_fg = rgb_to_grayscale(main_color); */
/* mix the colors */
rgb_tint(value_color, 0.0f, 0.0f, tone_bg, 0.2f); /* light gray */
rgb_tint(active_color, 0.6f, 0.2f, tone_bg, 0.2f); /* light blue */
rgb_tint(normal_color, 0.0f, 0.0f, tone_bg, 0.4f); /* gray */
rgb_tint(python_color, 0.0f, 0.0f, tone_bg, 0.5f); /* dark gray */
rgb_tint(alert_color, 0.0f, 0.8f, tone_bg, 0.1f); /* red */
/* draw text */
BLF_wordwrap(data->fstyle.uifont_id, data->wrap_width);
BLF_wordwrap(blf_mono_font, data->wrap_width);
bbox.xmin += 0.5f * pad_px; /* add padding to the text */
bbox.ymax -= 0.25f * pad_px;
for (i = 0; i < data->fields_len; i++) {
const uiTooltipField *field = &data->fields[i];
const uiTooltipField *field_next = (i + 1) != data->fields_len ? &data->fields[i + 1] : NULL;
bbox.ymin = bbox.ymax - (data->lineh * field->geom.lines);
if (field->format.style == UI_TIP_STYLE_HEADER) {
/* draw header and active data (is done here to be able to change color) */
uiFontStyle fstyle_header = data->fstyle;
/* override text-style */
fstyle_header.shadow = 1;
fstyle_header.shadowcolor = rgb_to_grayscale(tip_colors[UI_TIP_LC_MAIN]);
fstyle_header.shadx = fstyle_header.shady = 0;
fstyle_header.shadowalpha = 1.0f;
fstyle_header.word_wrap = true;
UI_fontstyle_set(&fstyle_header);
glColor3fv(tip_colors[UI_TIP_LC_MAIN]);
UI_fontstyle_draw(&fstyle_header, &bbox, field->text);
fstyle_header.shadow = 0;
/* offset to the end of the last line */
if (field->text_suffix) {
float xofs = field->geom.x_pos;
float yofs = data->lineh * (field->geom.lines - 1);
bbox.xmin += xofs;
bbox.ymax -= yofs;
glColor3fv(tip_colors[UI_TIP_LC_ACTIVE]);
UI_fontstyle_draw(&fstyle_header, &bbox, field->text_suffix);
/* undo offset */
bbox.xmin -= xofs;
bbox.ymax += yofs;
}
}
else if (field->format.style == UI_TIP_STYLE_MONO) {
uiFontStyle fstyle_mono = data->fstyle;
fstyle_mono.uifont_id = blf_mono_font;
fstyle_mono.word_wrap = true;
UI_fontstyle_set(&fstyle_mono);
/* XXX, needed because we dont have mono in 'U.uifonts' */
BLF_size(fstyle_mono.uifont_id, fstyle_mono.points * U.pixelsize, U.dpi);
glColor3fv(tip_colors[field->format.color_id]);
UI_fontstyle_draw(&fstyle_mono, &bbox, field->text);
}
else {
uiFontStyle fstyle_normal = data->fstyle;
BLI_assert(field->format.style == UI_TIP_STYLE_NORMAL);
fstyle_normal.word_wrap = true;
/* draw remaining data */
UI_fontstyle_set(&fstyle_normal);
glColor3fv(tip_colors[field->format.color_id]);
UI_fontstyle_draw(&fstyle_normal, &bbox, field->text);
}
bbox.ymax -= data->lineh * field->geom.lines;
if (field_next && field_next->format.is_pad) {
bbox.ymax -= data->lineh * (UI_TIP_PAD_FAC - 1);
}
}
BLF_disable(data->fstyle.uifont_id, BLF_WORD_WRAP);
BLF_disable(blf_mono_font, BLF_WORD_WRAP);
if (multisample_enabled)
glEnable(GL_MULTISAMPLE);
}
static void ui_tooltip_region_free_cb(ARegion *ar)
{
uiTooltipData *data;
data = ar->regiondata;
for (int i = 0; i < data->fields_len; i++) {
const uiTooltipField *field = &data->fields[i];
MEM_freeN(field->text);
if (field->text_suffix) {
MEM_freeN(field->text_suffix);
}
}
MEM_freeN(data->fields);
MEM_freeN(data);
ar->regiondata = NULL;
}
/** \} */
/* -------------------------------------------------------------------- */
/** \name ToolTip Creation
* \{ */
static uiTooltipData *ui_tooltip_data_from_button(bContext *C, uiBut *but)
{
uiStringInfo but_tip = {BUT_GET_TIP, NULL};
uiStringInfo enum_label = {BUT_GET_RNAENUM_LABEL, NULL};
uiStringInfo enum_tip = {BUT_GET_RNAENUM_TIP, NULL};
uiStringInfo op_keymap = {BUT_GET_OP_KEYMAP, NULL};
uiStringInfo prop_keymap = {BUT_GET_PROP_KEYMAP, NULL};
uiStringInfo rna_struct = {BUT_GET_RNASTRUCT_IDENTIFIER, NULL};
uiStringInfo rna_prop = {BUT_GET_RNAPROP_IDENTIFIER, NULL};
char buf[512];
/* create tooltip data */
uiTooltipData *data = MEM_callocN(sizeof(uiTooltipData), "uiTooltipData");
UI_but_string_info_get(C, but, &but_tip, &enum_label, &enum_tip, &op_keymap, &prop_keymap, &rna_struct, &rna_prop, NULL);
/* Tip */
if (but_tip.strinfo) {
{
uiTooltipField *field = text_field_add(
data, &(uiTooltipFormat){
.style = UI_TIP_STYLE_HEADER,
.color_id = UI_TIP_LC_NORMAL,
});
if (enum_label.strinfo) {
field->text = BLI_sprintfN("%s: ", but_tip.strinfo);
field->text_suffix = BLI_strdup(enum_label.strinfo);
}
else {
field->text = BLI_sprintfN("%s.", but_tip.strinfo);
}
}
/* special case enum rna buttons */
if ((but->type & UI_BTYPE_ROW) && but->rnaprop && RNA_property_flag(but->rnaprop) & PROP_ENUM_FLAG) {
uiTooltipField *field = text_field_add(
data, &(uiTooltipFormat){
.style = UI_TIP_STYLE_NORMAL,
.color_id = UI_TIP_LC_NORMAL,
});
field->text = BLI_strdup(IFACE_("(Shift-Click/Drag to select multiple)"));
}
}
/* Enum field label & tip */
if (enum_tip.strinfo) {
uiTooltipField *field = text_field_add(
data, &(uiTooltipFormat){
.style = UI_TIP_STYLE_NORMAL,
.color_id = UI_TIP_LC_VALUE,
.is_pad = true,
});
field->text = BLI_strdup(enum_tip.strinfo);
}
/* Op shortcut */
if (op_keymap.strinfo) {
uiTooltipField *field = text_field_add(
data, &(uiTooltipFormat){
.style = UI_TIP_STYLE_NORMAL,
.color_id = UI_TIP_LC_VALUE,
.is_pad = true,
});
field->text = BLI_sprintfN(TIP_("Shortcut: %s"), op_keymap.strinfo);
}
/* Property context-toggle shortcut */
if (prop_keymap.strinfo) {
uiTooltipField *field = text_field_add(
data, &(uiTooltipFormat){
.style = UI_TIP_STYLE_NORMAL,
.color_id = UI_TIP_LC_VALUE,
.is_pad = true,
});
field->text = BLI_sprintfN(TIP_("Shortcut: %s"), prop_keymap.strinfo);
}
if (ELEM(but->type, UI_BTYPE_TEXT, UI_BTYPE_SEARCH_MENU)) {
/* better not show the value of a password */
if ((but->rnaprop && (RNA_property_subtype(but->rnaprop) == PROP_PASSWORD)) == 0) {
/* full string */
ui_but_string_get(but, buf, sizeof(buf));
if (buf[0]) {
uiTooltipField *field = text_field_add(
data, &(uiTooltipFormat){
.style = UI_TIP_STYLE_NORMAL,
.color_id = UI_TIP_LC_VALUE,
.is_pad = true,
});
field->text = BLI_sprintfN(TIP_("Value: %s"), buf);
}
}
}
if (but->rnaprop) {
int unit_type = UI_but_unit_type_get(but);
if (unit_type == PROP_UNIT_ROTATION) {
if (RNA_property_type(but->rnaprop) == PROP_FLOAT) {
float value = RNA_property_array_check(but->rnaprop) ?
RNA_property_float_get_index(&but->rnapoin, but->rnaprop, but->rnaindex) :
RNA_property_float_get(&but->rnapoin, but->rnaprop);
uiTooltipField *field = text_field_add(
data, &(uiTooltipFormat){
.style = UI_TIP_STYLE_NORMAL,
.color_id = UI_TIP_LC_VALUE,
});
field->text = BLI_sprintfN(TIP_("Radians: %f"), value);
}
}
if (but->flag & UI_BUT_DRIVEN) {
if (ui_but_anim_expression_get(but, buf, sizeof(buf))) {
uiTooltipField *field = text_field_add(
data, &(uiTooltipFormat){
.style = UI_TIP_STYLE_NORMAL,
.color_id = UI_TIP_LC_NORMAL,
});
field->text = BLI_sprintfN(TIP_("Expression: %s"), buf);
}
}
if (but->rnapoin.id.data) {
const ID *id = but->rnapoin.id.data;
if (ID_IS_LINKED(id)) {
uiTooltipField *field = text_field_add(
data, &(uiTooltipFormat){
.style = UI_TIP_STYLE_NORMAL,
.color_id = UI_TIP_LC_NORMAL,
});
field->text = BLI_sprintfN(TIP_("Library: %s"), id->lib->name);
}
}
}
else if (but->optype) {
PointerRNA *opptr;
char *str;
opptr = UI_but_operator_ptr_get(but); /* allocated when needed, the button owns it */
/* so the context is passed to fieldf functions (some py fieldf functions use it) */
WM_operator_properties_sanitize(opptr, false);
str = WM_operator_pystring_ex(C, NULL, false, false, but->optype, opptr);
/* avoid overly verbose tips (eg, arrays of 20 layers), exact limit is arbitrary */
WM_operator_pystring_abbreviate(str, 32);
/* operator info */
if ((U.flag & USER_TOOLTIPS_PYTHON) == 0) {
uiTooltipField *field = text_field_add(
data, &(uiTooltipFormat){
.style = UI_TIP_STYLE_MONO,
.color_id = UI_TIP_LC_PYTHON,
.is_pad = true,
});
field->text = BLI_sprintfN(TIP_("Python: %s"), str);
}
MEM_freeN(str);
}
/* button is disabled, we may be able to tell user why */
if (but->flag & UI_BUT_DISABLED) {
const char *disabled_msg = NULL;
/* if operator poll check failed, it can give pretty precise info why */
if (but->optype) {
CTX_wm_operator_poll_msg_set(C, NULL);
WM_operator_poll_context(C, but->optype, but->opcontext);
disabled_msg = CTX_wm_operator_poll_msg_get(C);
}
/* alternatively, buttons can store some reasoning too */
else if (but->disabled_info) {
disabled_msg = TIP_(but->disabled_info);
}
if (disabled_msg && disabled_msg[0]) {
uiTooltipField *field = text_field_add(
data, &(uiTooltipFormat){
.style = UI_TIP_STYLE_NORMAL,
.color_id = UI_TIP_LC_ALERT,
});
field->text = BLI_sprintfN(TIP_("Disabled: %s"), disabled_msg);
}
}
if ((U.flag & USER_TOOLTIPS_PYTHON) == 0 && !but->optype && rna_struct.strinfo) {
{
uiTooltipField *field = text_field_add(
data, &(uiTooltipFormat){
.style = UI_TIP_STYLE_MONO,
.color_id = UI_TIP_LC_PYTHON,
.is_pad = true,
});
if (rna_prop.strinfo) {
/* Struct and prop */
field->text = BLI_sprintfN(TIP_("Python: %s.%s"), rna_struct.strinfo, rna_prop.strinfo);
}
else {
/* Only struct (e.g. menus) */
field->text = BLI_sprintfN(TIP_("Python: %s"), rna_struct.strinfo);
}
}
if (but->rnapoin.id.data) {
uiTooltipField *field = text_field_add(
data, &(uiTooltipFormat){
.style = UI_TIP_STYLE_MONO,
.color_id = UI_TIP_LC_PYTHON,
});
/* this could get its own 'BUT_GET_...' type */
/* never fails */
/* move ownership (no need for re-alloc) */
if (but->rnaprop) {
field->text = RNA_path_full_property_py_ex(&but->rnapoin, but->rnaprop, but->rnaindex, true);
}
else {
field->text = RNA_path_full_struct_py(&but->rnapoin);
}
}
}
/* Free strinfo's... */
if (but_tip.strinfo)
MEM_freeN(but_tip.strinfo);
if (enum_label.strinfo)
MEM_freeN(enum_label.strinfo);
if (enum_tip.strinfo)
MEM_freeN(enum_tip.strinfo);
if (op_keymap.strinfo)
MEM_freeN(op_keymap.strinfo);
if (prop_keymap.strinfo)
MEM_freeN(prop_keymap.strinfo);
if (rna_struct.strinfo)
MEM_freeN(rna_struct.strinfo);
if (rna_prop.strinfo)
MEM_freeN(rna_prop.strinfo);
BLI_assert(data->fields_len < MAX_TOOLTIP_LINES);
if (data->fields_len == 0) {
MEM_freeN(data);
return NULL;
}
else {
return data;
}
}
static ARegion *ui_tooltip_create_with_data(
bContext *C, uiTooltipData *data,
const float init_position[2],
const float aspect)
{
const float pad_px = UI_TIP_PADDING;
wmWindow *win = CTX_wm_window(C);
const int winx = WM_window_pixels_x(win);
uiStyle *style = UI_style_get();
static ARegionType type;
ARegion *ar;
int fonth, fontw;
int h, i;
rctf rect_fl;
rcti rect_i;
int font_flag = 0;
/* create area region */
ar = ui_region_temp_add(CTX_wm_screen(C));
memset(&type, 0, sizeof(ARegionType));
type.draw = ui_tooltip_region_draw_cb;
type.free = ui_tooltip_region_free_cb;
type.regionid = RGN_TYPE_TEMPORARY;
ar->type = &type;
/* set font, get bb */
data->fstyle = style->widget; /* copy struct */
ui_fontscale(&data->fstyle.points, aspect);
UI_fontstyle_set(&data->fstyle);
data->wrap_width = min_ii(UI_TIP_MAXWIDTH * U.pixelsize / aspect, winx - (UI_TIP_PADDING * 2));
font_flag |= BLF_WORD_WRAP;
if (data->fstyle.kerning == 1) {
font_flag |= BLF_KERNING_DEFAULT;
}
BLF_enable(data->fstyle.uifont_id, font_flag);
BLF_enable(blf_mono_font, font_flag);
BLF_wordwrap(data->fstyle.uifont_id, data->wrap_width);
BLF_wordwrap(blf_mono_font, data->wrap_width);
/* these defines tweaked depending on font */
#define TIP_BORDER_X (16.0f / aspect)
#define TIP_BORDER_Y (6.0f / aspect)
h = BLF_height_max(data->fstyle.uifont_id);
for (i = 0, fontw = 0, fonth = 0; i < data->fields_len; i++) {
uiTooltipField *field = &data->fields[i];
uiTooltipField *field_next = (i + 1) != data->fields_len ? &data->fields[i + 1] : NULL;
struct ResultBLF info;
int w, x_pos = 0;
int font_id;
if (field->format.style == UI_TIP_STYLE_MONO) {
BLF_size(blf_mono_font, data->fstyle.points * U.pixelsize, U.dpi);
font_id = blf_mono_font;
}
else {
BLI_assert(ELEM(field->format.style, UI_TIP_STYLE_NORMAL, UI_TIP_STYLE_HEADER));
font_id = data->fstyle.uifont_id;
}
w = BLF_width_ex(font_id, field->text, BLF_DRAW_STR_DUMMY_MAX, &info);
/* check for suffix (enum label) */
if (field->text_suffix && field->text_suffix[0]) {
x_pos = info.width;
w = max_ii(w, x_pos + BLF_width(font_id, field->text_suffix, BLF_DRAW_STR_DUMMY_MAX));
}
fontw = max_ii(fontw, w);
fonth += h * info.lines;
if (field_next && field_next->format.is_pad) {
fonth += h * (UI_TIP_PAD_FAC - 1);
}
field->geom.lines = info.lines;
field->geom.x_pos = x_pos;
}
//fontw *= aspect;
BLF_disable(data->fstyle.uifont_id, font_flag);
BLF_disable(blf_mono_font, font_flag);
ar->regiondata = data;
data->toth = fonth;
data->lineh = h;
/* compute position */
rect_fl.xmin = init_position[0] - TIP_BORDER_X;
rect_fl.xmax = rect_fl.xmin + fontw + pad_px;
rect_fl.ymax = init_position[1] - TIP_BORDER_Y;
rect_fl.ymin = rect_fl.ymax - fonth - TIP_BORDER_Y;
BLI_rcti_rctf_copy(&rect_i, &rect_fl);
#undef TIP_BORDER_X
#undef TIP_BORDER_Y
/* clip with window boundaries */
if (rect_i.xmax > winx) {
/* super size */
if (rect_i.xmax > winx + rect_i.xmin) {
rect_i.xmax = winx;
rect_i.xmin = 0;
}
else {
rect_i.xmin -= rect_i.xmax - winx;
rect_i.xmax = winx;
}
}
/* ensure at least 5 px above screen bounds
* 25 is just a guess to be above the menu item */
if (rect_i.ymin < 5) {
rect_i.ymax += (-rect_i.ymin) + 30;
rect_i.ymin = 30;
}
/* add padding */
BLI_rcti_resize(&rect_i,
BLI_rcti_size_x(&rect_i) + pad_px,
BLI_rcti_size_y(&rect_i) + pad_px);
/* widget rect, in region coords */
{
const int margin = UI_POPUP_MARGIN;
data->bbox.xmin = margin;
data->bbox.xmax = BLI_rcti_size_x(&rect_i) - margin;
data->bbox.ymin = margin;
data->bbox.ymax = BLI_rcti_size_y(&rect_i);
/* region bigger for shadow */
ar->winrct.xmin = rect_i.xmin - margin;
ar->winrct.xmax = rect_i.xmax + margin;
ar->winrct.ymin = rect_i.ymin - margin;
ar->winrct.ymax = rect_i.ymax + margin;
}
/* adds subwindow */
ED_region_init(C, ar);
/* notify change and redraw */
ED_region_tag_redraw(ar);
return ar;
}
/** \} */
/* -------------------------------------------------------------------- */
/** \name ToolTip Public API
* \{ */
ARegion *UI_tooltip_create_from_button(bContext *C, ARegion *butregion, uiBut *but)
{
wmWindow *win = CTX_wm_window(C);
/* aspect values that shrink text are likely unreadable */
const float aspect = min_ff(1.0f, but->block->aspect);
float init_position[2];
if (but->drawflag & UI_BUT_NO_TOOLTIP) {
return NULL;
}
uiTooltipData *data = NULL;
if (data == NULL) {
data = ui_tooltip_data_from_button(C, but);
}
if (data == NULL) {
return NULL;
}
init_position[0] = BLI_rctf_cent_x(&but->rect);
init_position[1] = but->rect.ymin;
if (butregion) {
ui_block_to_window_fl(butregion, but->block, &init_position[0], &init_position[1]);
init_position[0] = win->eventstate->x;
}
return ui_tooltip_create_with_data(C, data, init_position, aspect);
}
void UI_tooltip_free(bContext *C, ARegion *ar)
{
ui_region_temp_remove(C, CTX_wm_screen(C), ar);
}
/** \} */
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