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Made ImGui::PushClipRect()/PopClipRect() public. Changed ImDrawList::PushClipRect() prototype. Fixed demo. (#610)

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ocornut
2016-04-26 11:03:51 +02:00
parent 4b6e9ac396
commit ea6b615179
5 changed files with 31 additions and 29 deletions
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29
imgui_draw.cpp
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@ -214,20 +214,33 @@ void ImDrawList::UpdateTextureID()
#undef GetCurrentClipRect
#undef GetCurrentTextureId
// Scissoring. The values in clip_rect are x1, y1, x2, y2. Only apply to rendering! Prefer using higher-level ImGui::PushClipRect() to affect logic (hit-testing and widget culling)
void ImDrawList::PushClipRect(const ImVec4& clip_rect)
// Render-level scissoring. This is passed down to your render function but not used for CPU-side coarse clipping. Prefer using higher-level ImGui::PushClipRect() to affect logic (hit-testing and widget culling)
void ImDrawList::PushClipRect(ImVec2 cr_min, ImVec2 cr_max, bool intersect_with_current_clip_rect)
{
_ClipRectStack.push_back(clip_rect);
ImVec4 cr(cr_min.x, cr_min.y, cr_max.x, cr_max.y);
if (intersect_with_current_clip_rect && _ClipRectStack.Size)
{
ImVec4 current = _ClipRectStack.Data[_ClipRectStack.Size-1];
if (cr.x < current.x) cr.x = current.x;
if (cr.y < current.y) cr.y = current.y;
if (cr.z > current.z) cr.z = current.z;
if (cr.w > current.w) cr.w = current.w;
}
cr.z = ImMax(cr.x, cr.z);
cr.w = ImMax(cr.y, cr.w);
cr.x = (float)(int)(cr.x + 0.5f); // Round (expecting to round down). Ensure that e.g. (int)(max.x-min.x) in user's render code produce correct result.
cr.y = (float)(int)(cr.y + 0.5f);
cr.z = (float)(int)(cr.z + 0.5f);
cr.w = (float)(int)(cr.w + 0.5f);
_ClipRectStack.push_back(cr);
UpdateClipRect();
}
void ImDrawList::PushClipRectFullScreen()
{
PushClipRect(GNullClipRect);
// FIXME-OPT: This would be more correct but we're not supposed to access ImGuiState from here?
//ImGuiState& g = *GImGui;
//PushClipRect(GetVisibleRect());
PushClipRect(ImVec2(GNullClipRect.x, GNullClipRect.y), ImVec2(GNullClipRect.z, GNullClipRect.w));
//PushClipRect(GetVisibleRect()); // FIXME-OPT: This would be more correct but we're not supposed to access ImGuiState from here?
}
void ImDrawList::PopClipRect()