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examples: updated DirectUpdate sample

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Properly guide a sample usage to guarantee the sync call.
This commit is contained in:
Hermet Park 2024-02-02 12:28:17 +09:00 • committed by Hermet Park
parent a65d3ae37a
commit 9a6eff8ce2
1 changed files with 6 additions and 1 deletions
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7
src/examples/DirectUpdate.cpp
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@ -26,6 +26,7 @@
/* Drawing Commands */ /* Drawing Commands */
/************************************************************************/ /************************************************************************/
tvg::Shape* pShape = nullptr; tvg::Shape* pShape = nullptr;
static bool updated = false;
void tvgDrawCmds(tvg::Canvas* canvas) void tvgDrawCmds(tvg::Canvas* canvas)
{ {
@ -55,11 +56,13 @@ void tvgDrawCmds(tvg::Canvas* canvas)
shape->strokeWidth(1); shape->strokeWidth(1);
if (canvas->push(std::move(shape)) != tvg::Result::Success) return; if (canvas->push(std::move(shape)) != tvg::Result::Success) return;
updated = true;
} }
void tvgUpdateCmds(tvg::Canvas* canvas, float progress) void tvgUpdateCmds(tvg::Canvas* canvas, float progress)
{ {
if (!canvas) return; if (updated || !canvas) return;
//It's not necessary to clear canvas since it has a solid background and retaining the paints. //It's not necessary to clear canvas since it has a solid background and retaining the paints.
//canvas->clear(false); //canvas->clear(false);
@ -73,6 +76,7 @@ void tvgUpdateCmds(tvg::Canvas* canvas, float progress)
//Update shape for drawing (this may work asynchronously) //Update shape for drawing (this may work asynchronously)
canvas->update(pShape); canvas->update(pShape);
updated = true;
} }
} }
@ -110,6 +114,7 @@ void drawSwView(void* data, Eo* obj)
{ {
if (swCanvas->draw() == tvg::Result::Success) { if (swCanvas->draw() == tvg::Result::Success) {
swCanvas->sync(); swCanvas->sync();
updated = false;
} }
} }