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cache rendering of UILabel

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This commit is contained in:
Eduardo Bart
2012-01-17 03:36:25 -02:00
parent e701cce5fd
commit 7bcf7f536e
15 changed files with 124 additions and 87 deletions
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8
src/framework/ui/uiwidget.h
View File

@@ -407,6 +407,10 @@ private:
void initText();
void parseTextStyle(const OTMLNodePtr& styleNode);
Boolean<true> m_textMustRecache;
FrameBufferPtr m_textFramebuffer;
Size m_textCachedBoxSize;
protected:
void drawText(const Rect& screenCoords);
@@ -423,8 +427,8 @@ public:
void clearText() { setText(""); }
void setText(const std::string& text);
void setTextAlign(Fw::AlignmentFlag align) { m_textAlign = align; }
void setTextOffset(const Point& offset) { m_textOffset = offset; }
void setTextAlign(Fw::AlignmentFlag align) { m_textAlign = align; m_textMustRecache = true; }
void setTextOffset(const Point& offset) { m_textOffset = offset; m_textMustRecache = true; }
void setFont(const std::string& fontName);
std::string getText() { return m_text; }

58
src/framework/ui/uiwidgettext.cpp
View File

@@ -24,6 +24,7 @@
#include "uitranslator.h"
#include <framework/graphics/fontmanager.h>
#include <framework/graphics/painter.h>
#include <framework/graphics/framebuffer.h>
void UIWidget::initText()
{
@@ -47,12 +48,30 @@ void UIWidget::parseTextStyle(const OTMLNodePtr& styleNode)
void UIWidget::drawText(const Rect& screenCoords)
{
g_painter.setColor(m_color);
if(m_text.length() > 0 && m_color.a() > 0) {
Rect textRect = screenCoords;
textRect.translate(m_textOffset);
m_font->renderText(m_text, textRect, m_textAlign, m_color);
if(m_text.length() == 0 || m_color.a() == 0)
return;
Size boxSize = screenCoords.size();
if(boxSize != m_textCachedBoxSize || m_textMustRecache) {
if(!m_textFramebuffer)
m_textFramebuffer = FrameBufferPtr(new FrameBuffer(boxSize));
else
m_textFramebuffer->resize(boxSize);
m_textFramebuffer->bind();
Rect virtualTextRect(0, 0, boxSize);
virtualTextRect.translate(m_textOffset);
g_painter.setCompositionMode(Painter::CompositionMode_Add);
m_font->renderText(m_text, virtualTextRect, m_textAlign, Fw::white);
g_painter.resetCompositionMode();
m_textFramebuffer->release();
m_textMustRecache = false;
m_textCachedBoxSize = boxSize;
}
g_painter.setColor(m_color);
m_textFramebuffer->draw(screenCoords);
}
void UIWidget::onTextChange(const std::string& text)
@@ -67,26 +86,29 @@ void UIWidget::onFontChange(const std::string& font)
void UIWidget::setText(const std::string& text)
{
if(m_text != text) {
m_text = text;
if(m_text == text)
return;
// update rect size
if(!m_rect.isValid()) {
Size textSize = m_font->calculateTextRectSize(m_text);
Size newSize = getSize();
if(newSize.width() <= 0)
newSize.setWidth(textSize.width());
if(newSize.height() <= 0)
newSize.setHeight(textSize.height());
setSize(newSize);
}
m_text = text;
onTextChange(text);
// update rect size
if(!m_rect.isValid()) {
Size textSize = m_font->calculateTextRectSize(m_text);
Size newSize = getSize();
if(newSize.width() <= 0)
newSize.setWidth(textSize.width());
if(newSize.height() <= 0)
newSize.setHeight(textSize.height());
setSize(newSize);
}
onTextChange(text);
m_textMustRecache = true;
}
void UIWidget::setFont(const std::string& fontName)
{
m_font = g_fonts.getFont(fontName);
onFontChange(fontName);
m_textMustRecache = true;
}