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VIDEO: Initial code for drawing subtitles on overlay

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This commit is contained in:
Eugene Sandulenko 2018-05-22 22:55:44 +01:00
parent 9cb80bc9fb
commit af8c37db9d
2 changed files with 51 additions and 0 deletions
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38
video/subtitles.cpp
View File

@ -21,9 +21,12 @@
#include "common/debug.h"
#include "common/file.h"
#include "common/system.h"
#include "graphics/fonts/ttf.h"
#include "graphics/font.h"
#include "graphics/fontman.h"
#include "graphics/surface.h"
#include "video/subtitles.h"
@ -222,9 +225,11 @@ Common::String SRTParser::getSubtitle(uint32 timestamp) {
}
Subtitles::Subtitles() : _loaded(false), _font(nullptr) {
_surface = new Graphics::Surface();
}
Subtitles::~Subtitles() {
delete _surface;
}
void Subtitles::loadFont(const char *fontname, int height) {
@ -253,4 +258,37 @@ void Subtitles::loadSRTFile(const char *fname) {
_loaded = _srtParser.parseFile(fname);
}
void Subtitles::setBBox(const Common::Rect bbox) {
_bbox = bbox;
_surface->create(_bbox.width(), _bbox.height(), g_system->getOverlayFormat());
}
void Subtitles::drawSubtitle(uint32 timestamp, bool force) {
if (!_loaded)
return;
Common::String subtitle = _srtParser.getSubtitle(timestamp);
if (!force && subtitle == _prevSubtitle)
return;
_prevSubtitle = subtitle;
Common::Array<Common::String> lines;
int maxlineWidth = _font->wordWrapText(subtitle, _bbox.width(), lines);
int y = _bbox.top;
for (int i = 0; i < lines.size(); i++) {
_font->drawString(_surface, lines[i], _bbox.left, y, _bbox.width(), _color);
y += _font->getFontHeight();
}
g_system->copyRectToOverlay(_surface->getPixels(), _surface->pitch, _bbox.left, _bbox.right, _bbox.width(), _bbox.height());
}
} // End of namespace Video

13
video/subtitles.h
View File

@ -24,9 +24,11 @@
#include "common/str.h"
#include "common/array.h"
#include "common/rect.h"
namespace Graphics {
class Font;
struct Surface;
}
namespace Video {
@ -63,6 +65,9 @@ public:
void loadSRTFile(const char *fname);
void loadFont(const char *fontname, int height = 30);
void setBBox(const Common::Rect bbox);
void setColor(int color) { _color = color; }
void drawSubtitle(uint32 timestamp, bool force = false);
private:
SRTParser _srtParser;
@ -70,6 +75,14 @@ private:
const Graphics::Font *_font;
int _fontHeight;
Graphics::Surface *_surface;
Common::Rect _bbox;
Common::Rect _dirtyRect;
Common::String _prevSubtitle;
uint32 _color;
};
} // End of namespace Video