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blender-archive/source/blender/editors/space_sequencer/sequencer_channels_draw.c
Richard Antalik 302b04a5a3 VSE: Improved Retiming system
Patch implements better way to control playback speed than it is
possible to do with speed effect. Speed factor property can be set in
Time panel.

There are 2 layers of control:

Option to retime movie to match scene FPS rate.
Custom speed factor to control playback rate.
Since playback rate is strip property, it is now possible to manipulate
strip as normal one even if it is retimed.

To facilitate manipulation, some functions need to consider speed factor
and apply necessary corrections to strip offset or strip start. These
corrections may need to be float numbers, so start and offsets must be
float as well.

Sound strips now use speed factor instead of pitch. This means, that
strips will change length to match usable length. In addition, it is
possible to group movie and sound strip and change speed of meta strip.
2022-06-29 12:48:34 +02:00

366 lines
12 KiB
C

/* SPDX-License-Identifier: GPL-2.0-or-later
* Copyright 2022 Blender Foundation. All rights reserved. */
/** \file
* \ingroup sequencer
*/
#include "MEM_guardedalloc.h"
#include "DNA_scene_types.h"
#include "DNA_screen_types.h"
#include "BKE_context.h"
#include "BLI_blenlib.h"
#include "BLI_utildefines.h"
#include "ED_screen.h"
#include "GPU_framebuffer.h"
#include "GPU_immediate.h"
#include "GPU_immediate_util.h"
#include "GPU_matrix.h"
#include "GPU_state.h"
#include "GPU_vertex_buffer.h"
#include "GPU_viewport.h"
#include "RNA_access.h"
#include "RNA_prototypes.h"
#include "SEQ_channels.h"
#include "SEQ_sequencer.h"
#include "SEQ_time.h"
#include "UI_interface.h"
#include "UI_resources.h"
#include "UI_view2d.h"
#include "WM_api.h"
/* Own include. */
#include "sequencer_intern.h"
static ARegion *timeline_region_get(const ScrArea *area)
{
LISTBASE_FOREACH (ARegion *, region, &area->regionbase) {
if (region->regiontype == RGN_TYPE_WINDOW) {
return region;
}
}
BLI_assert_unreachable();
return NULL;
}
static float draw_offset_get(const View2D *timeline_region_v2d)
{
return timeline_region_v2d->cur.ymin;
}
static float channel_height_pixelspace_get(const View2D *timeline_region_v2d)
{
return UI_view2d_view_to_region_y(timeline_region_v2d, 1.0f) -
UI_view2d_view_to_region_y(timeline_region_v2d, 0.0f);
}
static float frame_width_pixelspace_get(const View2D *timeline_region_v2d)
{
return UI_view2d_view_to_region_x(timeline_region_v2d, 1.0f) -
UI_view2d_view_to_region_x(timeline_region_v2d, 0.0f);
}
static float icon_width_get(const SeqChannelDrawContext *context)
{
return (U.widget_unit * 0.8 * context->scale);
}
static float widget_y_offset(const SeqChannelDrawContext *context)
{
return (((context->channel_height / context->scale) - icon_width_get(context))) / 2;
}
static float channel_index_y_min(const SeqChannelDrawContext *context, const int index)
{
float y = (index - context->draw_offset) * context->channel_height;
y /= context->scale;
return y;
}
static void displayed_channel_range_get(const SeqChannelDrawContext *context,
int r_channel_range[2])
{
/* Channel 0 is not usable, so should never be drawn. */
r_channel_range[0] = max_ii(1, floor(context->timeline_region_v2d->cur.ymin));
r_channel_range[1] = ceil(context->timeline_region_v2d->cur.ymax);
rctf strip_boundbox;
BLI_rctf_init(&strip_boundbox, 0.0f, 0.0f, 1.0f, r_channel_range[1]);
SEQ_timeline_expand_boundbox(context->scene, context->seqbase, &strip_boundbox);
CLAMP(r_channel_range[0], strip_boundbox.ymin, strip_boundbox.ymax);
CLAMP(r_channel_range[1], strip_boundbox.ymin, MAXSEQ);
}
static char *draw_channel_widget_tooltip(bContext *UNUSED(C), void *argN, const char *UNUSED(tip))
{
char *dyn_tooltip = argN;
return BLI_strdup(dyn_tooltip);
}
static float draw_channel_widget_mute(const SeqChannelDrawContext *context,
uiBlock *block,
const int channel_index,
const float offset)
{
float y = channel_index_y_min(context, channel_index) + widget_y_offset(context);
const float width = icon_width_get(context);
SeqTimelineChannel *channel = SEQ_channel_get_by_index(context->channels, channel_index);
const int icon = SEQ_channel_is_muted(channel) ? ICON_CHECKBOX_DEHLT : ICON_CHECKBOX_HLT;
PointerRNA ptr;
RNA_pointer_create(&context->scene->id, &RNA_SequenceTimelineChannel, channel, &ptr);
PropertyRNA *hide_prop = RNA_struct_type_find_property(&RNA_SequenceTimelineChannel, "mute");
UI_block_emboss_set(block, UI_EMBOSS_NONE);
uiBut *but = uiDefIconButR_prop(block,
UI_BTYPE_TOGGLE,
1,
icon,
context->v2d->cur.xmax / context->scale - offset,
y,
width,
width,
&ptr,
hide_prop,
0,
0,
0,
0,
0,
NULL);
char *tooltip = BLI_sprintfN(
"%s channel %d", SEQ_channel_is_muted(channel) ? "Unmute" : "Mute", channel_index);
UI_but_func_tooltip_set(but, draw_channel_widget_tooltip, tooltip, MEM_freeN);
return width;
}
static float draw_channel_widget_lock(const SeqChannelDrawContext *context,
uiBlock *block,
const int channel_index,
const float offset)
{
float y = channel_index_y_min(context, channel_index) + widget_y_offset(context);
const float width = icon_width_get(context);
SeqTimelineChannel *channel = SEQ_channel_get_by_index(context->channels, channel_index);
const int icon = SEQ_channel_is_locked(channel) ? ICON_LOCKED : ICON_UNLOCKED;
PointerRNA ptr;
RNA_pointer_create(&context->scene->id, &RNA_SequenceTimelineChannel, channel, &ptr);
PropertyRNA *hide_prop = RNA_struct_type_find_property(&RNA_SequenceTimelineChannel, "lock");
UI_block_emboss_set(block, UI_EMBOSS_NONE);
uiBut *but = uiDefIconButR_prop(block,
UI_BTYPE_TOGGLE,
1,
icon,
context->v2d->cur.xmax / context->scale - offset,
y,
width,
width,
&ptr,
hide_prop,
0,
0,
0,
0,
0,
"");
char *tooltip = BLI_sprintfN(
"%s channel %d", SEQ_channel_is_locked(channel) ? "Unlock" : "Lock", channel_index);
UI_but_func_tooltip_set(but, draw_channel_widget_tooltip, tooltip, MEM_freeN);
return width;
}
static bool channel_is_being_renamed(const SpaceSeq *sseq, const int channel_index)
{
return sseq->runtime.rename_channel_index == channel_index;
}
static float text_size_get(const SeqChannelDrawContext *context)
{
const uiStyle *style = UI_style_get_dpi();
return UI_fontstyle_height_max(&style->widget) * 1.5f * context->scale;
}
/* TODO: decide what gets priority - label or buttons. */
static rctf label_rect_init(const SeqChannelDrawContext *context,
const int channel_index,
const float used_width)
{
float text_size = text_size_get(context);
float margin = (context->channel_height / context->scale - text_size) / 2.0f;
float y = channel_index_y_min(context, channel_index) + margin;
float margin_x = icon_width_get(context) * 0.65;
float width = max_ff(0.0f, context->v2d->cur.xmax / context->scale - used_width);
/* Text input has own margin. Prevent text jumping around and use as much space as possible. */
if (channel_is_being_renamed(CTX_wm_space_seq(context->C), channel_index)) {
float input_box_margin = icon_width_get(context) * 0.5f;
margin_x -= input_box_margin;
width += input_box_margin;
}
rctf rect;
BLI_rctf_init(&rect, margin_x, margin_x + width, y, y + text_size);
return rect;
}
static void draw_channel_labels(const SeqChannelDrawContext *context,
uiBlock *block,
const int channel_index,
const float used_width)
{
SpaceSeq *sseq = CTX_wm_space_seq(context->C);
rctf rect = label_rect_init(context, channel_index, used_width);
if (BLI_rctf_size_y(&rect) <= 1.0f || BLI_rctf_size_x(&rect) <= 1.0f) {
return;
}
if (channel_is_being_renamed(sseq, channel_index)) {
SeqTimelineChannel *channel = SEQ_channel_get_by_index(context->channels, channel_index);
PointerRNA ptr = {NULL};
RNA_pointer_create(&context->scene->id, &RNA_SequenceTimelineChannel, channel, &ptr);
PropertyRNA *prop = RNA_struct_name_property(ptr.type);
UI_block_emboss_set(block, UI_EMBOSS);
uiBut *but = uiDefButR(block,
UI_BTYPE_TEXT,
1,
"",
rect.xmin,
rect.ymin,
BLI_rctf_size_x(&rect),
BLI_rctf_size_y(&rect),
&ptr,
RNA_property_identifier(prop),
-1,
0,
0,
0,
0,
NULL);
UI_block_emboss_set(block, UI_EMBOSS_NONE);
if (UI_but_active_only(context->C, context->region, block, but) == false) {
sseq->runtime.rename_channel_index = 0;
}
WM_event_add_notifier(context->C, NC_SCENE | ND_SEQUENCER, context->scene);
}
else {
const char *label = SEQ_channel_name_get(context->channels, channel_index);
uiDefBut(block,
UI_BTYPE_LABEL,
0,
label,
rect.xmin,
rect.ymin,
rect.xmax - rect.xmin,
(rect.ymax - rect.ymin),
NULL,
0,
0,
0,
0,
NULL);
}
}
/* TODO: different text/buttons alignment. */
static void draw_channel_header(const SeqChannelDrawContext *context,
uiBlock *block,
const int channel_index)
{
float offset = icon_width_get(context) * 1.5f;
offset += draw_channel_widget_lock(context, block, channel_index, offset);
offset += draw_channel_widget_mute(context, block, channel_index, offset);
draw_channel_labels(context, block, channel_index, offset);
}
static void draw_channel_headers(const SeqChannelDrawContext *context)
{
GPU_matrix_push();
wmOrtho2_pixelspace(context->region->winx / context->scale,
context->region->winy / context->scale);
uiBlock *block = UI_block_begin(context->C, context->region, __func__, UI_EMBOSS);
int channel_range[2];
displayed_channel_range_get(context, channel_range);
for (int channel = channel_range[0]; channel <= channel_range[1]; channel++) {
draw_channel_header(context, block, channel);
}
UI_block_end(context->C, block);
UI_block_draw(context->C, block);
GPU_matrix_pop();
}
static void draw_background(void)
{
UI_ThemeClearColor(TH_BACK);
}
void channel_draw_context_init(const bContext *C,
ARegion *region,
SeqChannelDrawContext *r_context)
{
r_context->C = C;
r_context->area = CTX_wm_area(C);
r_context->region = region;
r_context->v2d = &region->v2d;
r_context->scene = CTX_data_scene(C);
r_context->ed = SEQ_editing_get(r_context->scene);
r_context->seqbase = SEQ_active_seqbase_get(r_context->ed);
r_context->channels = SEQ_channels_displayed_get(r_context->ed);
r_context->timeline_region = timeline_region_get(CTX_wm_area(C));
r_context->timeline_region_v2d = &r_context->timeline_region->v2d;
r_context->channel_height = channel_height_pixelspace_get(r_context->timeline_region_v2d);
r_context->frame_width = frame_width_pixelspace_get(r_context->timeline_region_v2d);
r_context->draw_offset = draw_offset_get(r_context->timeline_region_v2d);
r_context->scale = min_ff(r_context->channel_height / (U.widget_unit * 0.6), 1);
}
void draw_channels(const bContext *C, ARegion *region)
{
draw_background();
Editing *ed = SEQ_editing_get(CTX_data_scene(C));
if (ed == NULL) {
return;
}
SeqChannelDrawContext context;
channel_draw_context_init(C, region, &context);
UI_view2d_view_ortho(context.v2d);
draw_channel_headers(&context);
UI_view2d_view_restore(C);
}