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Avoid negative clipping rectangle when collapsing windows, ImDrawList could still submit data #177

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ocornut
2015-03-26 16:03:30 +00:00
parent b04ee7e040
commit 8b7668d24f
2 changed files with 7 additions and 1 deletions
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6
imgui.cpp
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@@ -2098,6 +2098,7 @@ static void PushClipRect(const ImVec4& clip_rect, bool clipped = true)
cr = ImVec4(ImMax(cr.x, cur_cr.x), ImMax(cr.y, cur_cr.y), ImMin(cr.z, cur_cr.z), ImMin(cr.w, cur_cr.w));
}
IM_ASSERT(cr.x <= cr.z && cr.y <= cr.w);
window->ClipRectStack.push_back(cr);
window->DrawList->PushClipRect(cr);
}
@@ -3295,10 +3296,13 @@ bool ImGui::Begin(const char* name, bool* p_opened, const ImVec2& size_on_first_
// Inner clipping rectangle
// We set this up after processing the resize grip so that our clip rectangle doesn't lag by a frame
// Note that if our window is collapsed we will end up with a null clipping rectangle which is the correct behavior.
const ImRect title_bar_rect = window->TitleBarRect();
ImVec4 clip_rect(title_bar_rect.Min.x+0.5f+window->WindowPadding().x*0.5f, title_bar_rect.Max.y+0.5f, window->Rect().Max.x+0.5f-window->WindowPadding().x*0.5f, window->Rect().Max.y-1.5f);
if (window->ScrollbarY)
clip_rect.z -= style.ScrollbarWidth;
clip_rect.z = ImMax(clip_rect.x, clip_rect.z);
clip_rect.w = ImMax(clip_rect.y, clip_rect.w);
PushClipRect(clip_rect);
// Clear 'accessed' flag last thing
@@ -7360,6 +7364,8 @@ void ImDrawList::AddDrawCmd()
draw_cmd.texture_id = texture_id_stack.empty() ? NULL : texture_id_stack.back();
draw_cmd.user_callback = NULL;
draw_cmd.user_callback_data = NULL;
IM_ASSERT(draw_cmd.clip_rect.x <= draw_cmd.clip_rect.z && draw_cmd.clip_rect.y <= draw_cmd.clip_rect.w);
commands.push_back(draw_cmd);
}