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Internals: Extracted RenderMouseCursor() out of EndFrame(). Moved to imgui_draw.cpp along with RenderArrowPointingAt(). Comments. (#2013)

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omar
2018-08-09 18:07:49 +02:00
parent 421dc19798
commit fda9dc8e18
3 changed files with 55 additions and 31 deletions
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46
imgui_draw.cpp
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@ -6,6 +6,7 @@
// - ImDrawList
// - ImDrawData
// - ImFontAtlas
// - Internal Render Helpers
// - ImFont
// - Default font data
@ -2786,8 +2787,51 @@ void ImFont::RenderText(ImDrawList* draw_list, float size, ImVec2 pos, ImU32 col
}
//-----------------------------------------------------------------------------
// Internals Drawing Helpers
// Internals Render Helpers
// (progressively moved from imgui.cpp to here when they are redesigned to stop accessing ImGui global state)
//-----------------------------------------------------------------------------
// RenderMouseCursor()
// RenderArrowPointingAt()
// RenderRectFilledRangeH()
//-----------------------------------------------------------------------------
void ImGui::RenderMouseCursor(ImDrawList* draw_list, ImVec2 pos, float scale, ImGuiMouseCursor mouse_cursor)
{
if (mouse_cursor == ImGuiMouseCursor_None)
return;
IM_ASSERT(mouse_cursor > ImGuiMouseCursor_None && mouse_cursor < ImGuiMouseCursor_COUNT);
const ImU32 col_shadow = IM_COL32(0, 0, 0, 48);
const ImU32 col_border = IM_COL32(0, 0, 0, 255); // Black
const ImU32 col_fill = IM_COL32(255, 255, 255, 255); // White
ImFontAtlas* font_atlas = draw_list->_Data->Font->ContainerAtlas;
ImVec2 offset, size, uv[4];
if (font_atlas->GetMouseCursorTexData(mouse_cursor, &offset, &size, &uv[0], &uv[2]))
{
pos -= offset;
const ImTextureID tex_id = font_atlas->TexID;
draw_list->PushTextureID(tex_id);
draw_list->AddImage(tex_id, pos + ImVec2(1,0)*scale, pos + ImVec2(1,0)*scale + size*scale, uv[2], uv[3], col_shadow);
draw_list->AddImage(tex_id, pos + ImVec2(2,0)*scale, pos + ImVec2(2,0)*scale + size*scale, uv[2], uv[3], col_shadow);
draw_list->AddImage(tex_id, pos, pos + size*scale, uv[2], uv[3], col_border);
draw_list->AddImage(tex_id, pos, pos + size*scale, uv[0], uv[1], col_fill);
draw_list->PopTextureID();
}
}
// Render an arrow. 'pos' is position of the arrow tip. half_sz.x is length from base to tip. half_sz.y is length on each side.
void ImGui::RenderArrowPointingAt(ImDrawList* draw_list, ImVec2 pos, ImVec2 half_sz, ImGuiDir direction, ImU32 col)
{
switch (direction)
{
case ImGuiDir_Left: draw_list->AddTriangleFilled(ImVec2(pos.x + half_sz.x, pos.y - half_sz.y), ImVec2(pos.x + half_sz.x, pos.y + half_sz.y), pos, col); return;
case ImGuiDir_Right: draw_list->AddTriangleFilled(ImVec2(pos.x - half_sz.x, pos.y + half_sz.y), ImVec2(pos.x - half_sz.x, pos.y - half_sz.y), pos, col); return;
case ImGuiDir_Up: draw_list->AddTriangleFilled(ImVec2(pos.x + half_sz.x, pos.y + half_sz.y), ImVec2(pos.x - half_sz.x, pos.y + half_sz.y), pos, col); return;
case ImGuiDir_Down: draw_list->AddTriangleFilled(ImVec2(pos.x - half_sz.x, pos.y - half_sz.y), ImVec2(pos.x + half_sz.x, pos.y - half_sz.y), pos, col); return;
case ImGuiDir_None: case ImGuiDir_COUNT: break; // Fix warnings
}
}
static inline float ImAcos01(float x)
{