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Internals: Refactor: Moved render functions to their own section. (#2036)
This commit is contained in:
omar
parent
65876f348a
commit
cbdce80837
441
imgui.cpp
441
imgui.cpp
@ -53,6 +53,7 @@ CODE
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- ImGuiTextFilter
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- ImGuiTextBuffer
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- ImGuiListClipper
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- Render Helpers
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- Main Code (most of the code! lots of stuff, needs tidying up)
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- Tooltips
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- Popups
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@ -2058,6 +2059,226 @@ bool ImGuiListClipper::Step()
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return false;
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}
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//-----------------------------------------------------------------------------
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// RENDER HELPERS
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// Those [Internal] functions are a terrible mess - their signature and behavior will change.
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// Also see imgui_draw.cpp for some more which have been reworked to not rely on ImGui:: state.
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//-----------------------------------------------------------------------------
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const char* ImGui::FindRenderedTextEnd(const char* text, const char* text_end)
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{
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const char* text_display_end = text;
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if (!text_end)
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text_end = (const char*)-1;
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while (text_display_end < text_end && *text_display_end != '\0' && (text_display_end[0] != '#' || text_display_end[1] != '#'))
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text_display_end++;
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return text_display_end;
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}
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// Internal ImGui functions to render text
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// RenderText***() functions calls ImDrawList::AddText() calls ImBitmapFont::RenderText()
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void ImGui::RenderText(ImVec2 pos, const char* text, const char* text_end, bool hide_text_after_hash)
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{
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ImGuiContext& g = *GImGui;
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ImGuiWindow* window = g.CurrentWindow;
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// Hide anything after a '##' string
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const char* text_display_end;
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if (hide_text_after_hash)
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{
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text_display_end = FindRenderedTextEnd(text, text_end);
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}
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else
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{
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if (!text_end)
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text_end = text + strlen(text); // FIXME-OPT
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text_display_end = text_end;
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}
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if (text != text_display_end)
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{
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window->DrawList->AddText(g.Font, g.FontSize, pos, GetColorU32(ImGuiCol_Text), text, text_display_end);
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if (g.LogEnabled)
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LogRenderedText(&pos, text, text_display_end);
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}
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}
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void ImGui::RenderTextWrapped(ImVec2 pos, const char* text, const char* text_end, float wrap_width)
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{
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ImGuiContext& g = *GImGui;
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ImGuiWindow* window = g.CurrentWindow;
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if (!text_end)
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text_end = text + strlen(text); // FIXME-OPT
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if (text != text_end)
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{
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window->DrawList->AddText(g.Font, g.FontSize, pos, GetColorU32(ImGuiCol_Text), text, text_end, wrap_width);
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if (g.LogEnabled)
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LogRenderedText(&pos, text, text_end);
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}
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}
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// Default clip_rect uses (pos_min,pos_max)
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// Handle clipping on CPU immediately (vs typically let the GPU clip the triangles that are overlapping the clipping rectangle edges)
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void ImGui::RenderTextClipped(const ImVec2& pos_min, const ImVec2& pos_max, const char* text, const char* text_end, const ImVec2* text_size_if_known, const ImVec2& align, const ImRect* clip_rect)
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{
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// Hide anything after a '##' string
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const char* text_display_end = FindRenderedTextEnd(text, text_end);
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const int text_len = (int)(text_display_end - text);
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if (text_len == 0)
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return;
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ImGuiContext& g = *GImGui;
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ImGuiWindow* window = g.CurrentWindow;
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// Perform CPU side clipping for single clipped element to avoid using scissor state
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ImVec2 pos = pos_min;
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const ImVec2 text_size = text_size_if_known ? *text_size_if_known : CalcTextSize(text, text_display_end, false, 0.0f);
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const ImVec2* clip_min = clip_rect ? &clip_rect->Min : &pos_min;
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const ImVec2* clip_max = clip_rect ? &clip_rect->Max : &pos_max;
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bool need_clipping = (pos.x + text_size.x >= clip_max->x) || (pos.y + text_size.y >= clip_max->y);
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if (clip_rect) // If we had no explicit clipping rectangle then pos==clip_min
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need_clipping |= (pos.x < clip_min->x) || (pos.y < clip_min->y);
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// Align whole block. We should defer that to the better rendering function when we'll have support for individual line alignment.
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if (align.x > 0.0f) pos.x = ImMax(pos.x, pos.x + (pos_max.x - pos.x - text_size.x) * align.x);
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if (align.y > 0.0f) pos.y = ImMax(pos.y, pos.y + (pos_max.y - pos.y - text_size.y) * align.y);
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// Render
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if (need_clipping)
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{
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ImVec4 fine_clip_rect(clip_min->x, clip_min->y, clip_max->x, clip_max->y);
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window->DrawList->AddText(g.Font, g.FontSize, pos, GetColorU32(ImGuiCol_Text), text, text_display_end, 0.0f, &fine_clip_rect);
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}
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else
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{
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window->DrawList->AddText(g.Font, g.FontSize, pos, GetColorU32(ImGuiCol_Text), text, text_display_end, 0.0f, NULL);
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}
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if (g.LogEnabled)
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LogRenderedText(&pos, text, text_display_end);
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}
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// Render a rectangle shaped with optional rounding and borders
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void ImGui::RenderFrame(ImVec2 p_min, ImVec2 p_max, ImU32 fill_col, bool border, float rounding)
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{
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ImGuiContext& g = *GImGui;
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ImGuiWindow* window = g.CurrentWindow;
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window->DrawList->AddRectFilled(p_min, p_max, fill_col, rounding);
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const float border_size = g.Style.FrameBorderSize;
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if (border && border_size > 0.0f)
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{
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window->DrawList->AddRect(p_min+ImVec2(1,1), p_max+ImVec2(1,1), GetColorU32(ImGuiCol_BorderShadow), rounding, ImDrawCornerFlags_All, border_size);
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window->DrawList->AddRect(p_min, p_max, GetColorU32(ImGuiCol_Border), rounding, ImDrawCornerFlags_All, border_size);
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}
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}
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void ImGui::RenderFrameBorder(ImVec2 p_min, ImVec2 p_max, float rounding)
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{
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ImGuiContext& g = *GImGui;
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ImGuiWindow* window = g.CurrentWindow;
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const float border_size = g.Style.FrameBorderSize;
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if (border_size > 0.0f)
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{
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window->DrawList->AddRect(p_min+ImVec2(1,1), p_max+ImVec2(1,1), GetColorU32(ImGuiCol_BorderShadow), rounding, ImDrawCornerFlags_All, border_size);
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window->DrawList->AddRect(p_min, p_max, GetColorU32(ImGuiCol_Border), rounding, ImDrawCornerFlags_All, border_size);
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}
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}
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// Render an arrow aimed to be aligned with text (p_min is a position in the same space text would be positioned). To e.g. denote expanded/collapsed state
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void ImGui::RenderArrow(ImVec2 p_min, ImGuiDir dir, float scale)
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{
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ImGuiContext& g = *GImGui;
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const float h = g.FontSize * 1.00f;
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float r = h * 0.40f * scale;
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ImVec2 center = p_min + ImVec2(h * 0.50f, h * 0.50f * scale);
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ImVec2 a, b, c;
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switch (dir)
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{
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case ImGuiDir_Up:
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case ImGuiDir_Down:
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if (dir == ImGuiDir_Up) r = -r;
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a = ImVec2(+0.000f,+0.750f) * r;
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b = ImVec2(-0.866f,-0.750f) * r;
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c = ImVec2(+0.866f,-0.750f) * r;
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break;
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case ImGuiDir_Left:
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case ImGuiDir_Right:
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if (dir == ImGuiDir_Left) r = -r;
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a = ImVec2(+0.750f,+0.000f) * r;
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b = ImVec2(-0.750f,+0.866f) * r;
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c = ImVec2(-0.750f,-0.866f) * r;
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break;
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case ImGuiDir_None:
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case ImGuiDir_COUNT:
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IM_ASSERT(0);
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break;
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}
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g.CurrentWindow->DrawList->AddTriangleFilled(center + a, center + b, center + c, GetColorU32(ImGuiCol_Text));
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}
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void ImGui::RenderBullet(ImVec2 pos)
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{
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ImGuiContext& g = *GImGui;
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ImGuiWindow* window = g.CurrentWindow;
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window->DrawList->AddCircleFilled(pos, g.FontSize*0.20f, GetColorU32(ImGuiCol_Text), 8);
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}
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void ImGui::RenderCheckMark(ImVec2 pos, ImU32 col, float sz)
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{
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ImGuiContext& g = *GImGui;
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ImGuiWindow* window = g.CurrentWindow;
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float thickness = ImMax(sz / 5.0f, 1.0f);
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sz -= thickness*0.5f;
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pos += ImVec2(thickness*0.25f, thickness*0.25f);
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float third = sz / 3.0f;
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float bx = pos.x + third;
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float by = pos.y + sz - third*0.5f;
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window->DrawList->PathLineTo(ImVec2(bx - third, by - third));
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window->DrawList->PathLineTo(ImVec2(bx, by));
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window->DrawList->PathLineTo(ImVec2(bx + third*2, by - third*2));
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window->DrawList->PathStroke(col, false, thickness);
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}
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void ImGui::RenderNavHighlight(const ImRect& bb, ImGuiID id, ImGuiNavHighlightFlags flags)
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{
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ImGuiContext& g = *GImGui;
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if (id != g.NavId)
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return;
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if (g.NavDisableHighlight && !(flags & ImGuiNavHighlightFlags_AlwaysDraw))
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return;
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ImGuiWindow* window = ImGui::GetCurrentWindow();
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if (window->DC.NavHideHighlightOneFrame)
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return;
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float rounding = (flags & ImGuiNavHighlightFlags_NoRounding) ? 0.0f : g.Style.FrameRounding;
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ImRect display_rect = bb;
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display_rect.ClipWith(window->ClipRect);
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if (flags & ImGuiNavHighlightFlags_TypeDefault)
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{
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const float THICKNESS = 2.0f;
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const float DISTANCE = 3.0f + THICKNESS * 0.5f;
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display_rect.Expand(ImVec2(DISTANCE,DISTANCE));
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bool fully_visible = window->ClipRect.Contains(display_rect);
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if (!fully_visible)
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window->DrawList->PushClipRect(display_rect.Min, display_rect.Max);
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window->DrawList->AddRect(display_rect.Min + ImVec2(THICKNESS*0.5f,THICKNESS*0.5f), display_rect.Max - ImVec2(THICKNESS*0.5f,THICKNESS*0.5f), GetColorU32(ImGuiCol_NavHighlight), rounding, ImDrawCornerFlags_All, THICKNESS);
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if (!fully_visible)
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window->DrawList->PopClipRect();
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}
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if (flags & ImGuiNavHighlightFlags_TypeThin)
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{
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window->DrawList->AddRect(display_rect.Min, display_rect.Max, GetColorU32(ImGuiCol_NavHighlight), rounding, ~0, 1.0f);
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}
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}
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//-----------------------------------------------------------------------------
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// MAIN CODE
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// (this category is still too large and badly ordered, needs some tidying up)
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@ -3380,220 +3601,6 @@ void ImGui::Render()
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#endif
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}
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const char* ImGui::FindRenderedTextEnd(const char* text, const char* text_end)
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{
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const char* text_display_end = text;
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if (!text_end)
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text_end = (const char*)-1;
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while (text_display_end < text_end && *text_display_end != '\0' && (text_display_end[0] != '#' || text_display_end[1] != '#'))
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text_display_end++;
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return text_display_end;
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}
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// Internal ImGui functions to render text
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// RenderText***() functions calls ImDrawList::AddText() calls ImBitmapFont::RenderText()
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void ImGui::RenderText(ImVec2 pos, const char* text, const char* text_end, bool hide_text_after_hash)
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{
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ImGuiContext& g = *GImGui;
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ImGuiWindow* window = g.CurrentWindow;
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// Hide anything after a '##' string
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const char* text_display_end;
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if (hide_text_after_hash)
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{
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text_display_end = FindRenderedTextEnd(text, text_end);
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}
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else
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{
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if (!text_end)
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text_end = text + strlen(text); // FIXME-OPT
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text_display_end = text_end;
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}
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if (text != text_display_end)
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{
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window->DrawList->AddText(g.Font, g.FontSize, pos, GetColorU32(ImGuiCol_Text), text, text_display_end);
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if (g.LogEnabled)
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LogRenderedText(&pos, text, text_display_end);
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}
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}
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void ImGui::RenderTextWrapped(ImVec2 pos, const char* text, const char* text_end, float wrap_width)
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{
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ImGuiContext& g = *GImGui;
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ImGuiWindow* window = g.CurrentWindow;
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if (!text_end)
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text_end = text + strlen(text); // FIXME-OPT
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if (text != text_end)
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{
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window->DrawList->AddText(g.Font, g.FontSize, pos, GetColorU32(ImGuiCol_Text), text, text_end, wrap_width);
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if (g.LogEnabled)
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LogRenderedText(&pos, text, text_end);
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}
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}
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// Default clip_rect uses (pos_min,pos_max)
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// Handle clipping on CPU immediately (vs typically let the GPU clip the triangles that are overlapping the clipping rectangle edges)
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void ImGui::RenderTextClipped(const ImVec2& pos_min, const ImVec2& pos_max, const char* text, const char* text_end, const ImVec2* text_size_if_known, const ImVec2& align, const ImRect* clip_rect)
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{
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// Hide anything after a '##' string
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const char* text_display_end = FindRenderedTextEnd(text, text_end);
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const int text_len = (int)(text_display_end - text);
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if (text_len == 0)
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return;
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ImGuiContext& g = *GImGui;
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ImGuiWindow* window = g.CurrentWindow;
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// Perform CPU side clipping for single clipped element to avoid using scissor state
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ImVec2 pos = pos_min;
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const ImVec2 text_size = text_size_if_known ? *text_size_if_known : CalcTextSize(text, text_display_end, false, 0.0f);
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const ImVec2* clip_min = clip_rect ? &clip_rect->Min : &pos_min;
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const ImVec2* clip_max = clip_rect ? &clip_rect->Max : &pos_max;
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bool need_clipping = (pos.x + text_size.x >= clip_max->x) || (pos.y + text_size.y >= clip_max->y);
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if (clip_rect) // If we had no explicit clipping rectangle then pos==clip_min
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need_clipping |= (pos.x < clip_min->x) || (pos.y < clip_min->y);
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// Align whole block. We should defer that to the better rendering function when we'll have support for individual line alignment.
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if (align.x > 0.0f) pos.x = ImMax(pos.x, pos.x + (pos_max.x - pos.x - text_size.x) * align.x);
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if (align.y > 0.0f) pos.y = ImMax(pos.y, pos.y + (pos_max.y - pos.y - text_size.y) * align.y);
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// Render
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if (need_clipping)
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{
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ImVec4 fine_clip_rect(clip_min->x, clip_min->y, clip_max->x, clip_max->y);
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window->DrawList->AddText(g.Font, g.FontSize, pos, GetColorU32(ImGuiCol_Text), text, text_display_end, 0.0f, &fine_clip_rect);
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}
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else
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{
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window->DrawList->AddText(g.Font, g.FontSize, pos, GetColorU32(ImGuiCol_Text), text, text_display_end, 0.0f, NULL);
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}
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if (g.LogEnabled)
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LogRenderedText(&pos, text, text_display_end);
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}
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// Render a rectangle shaped with optional rounding and borders
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void ImGui::RenderFrame(ImVec2 p_min, ImVec2 p_max, ImU32 fill_col, bool border, float rounding)
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{
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ImGuiContext& g = *GImGui;
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ImGuiWindow* window = g.CurrentWindow;
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window->DrawList->AddRectFilled(p_min, p_max, fill_col, rounding);
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const float border_size = g.Style.FrameBorderSize;
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if (border && border_size > 0.0f)
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{
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window->DrawList->AddRect(p_min+ImVec2(1,1), p_max+ImVec2(1,1), GetColorU32(ImGuiCol_BorderShadow), rounding, ImDrawCornerFlags_All, border_size);
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window->DrawList->AddRect(p_min, p_max, GetColorU32(ImGuiCol_Border), rounding, ImDrawCornerFlags_All, border_size);
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}
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}
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void ImGui::RenderFrameBorder(ImVec2 p_min, ImVec2 p_max, float rounding)
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{
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ImGuiContext& g = *GImGui;
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ImGuiWindow* window = g.CurrentWindow;
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const float border_size = g.Style.FrameBorderSize;
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if (border_size > 0.0f)
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{
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window->DrawList->AddRect(p_min+ImVec2(1,1), p_max+ImVec2(1,1), GetColorU32(ImGuiCol_BorderShadow), rounding, ImDrawCornerFlags_All, border_size);
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window->DrawList->AddRect(p_min, p_max, GetColorU32(ImGuiCol_Border), rounding, ImDrawCornerFlags_All, border_size);
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}
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}
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// Render an arrow aimed to be aligned with text (p_min is a position in the same space text would be positioned). To e.g. denote expanded/collapsed state
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void ImGui::RenderArrow(ImVec2 p_min, ImGuiDir dir, float scale)
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{
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ImGuiContext& g = *GImGui;
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const float h = g.FontSize * 1.00f;
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float r = h * 0.40f * scale;
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ImVec2 center = p_min + ImVec2(h * 0.50f, h * 0.50f * scale);
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ImVec2 a, b, c;
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switch (dir)
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{
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case ImGuiDir_Up:
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case ImGuiDir_Down:
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if (dir == ImGuiDir_Up) r = -r;
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a = ImVec2(+0.000f,+0.750f) * r;
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b = ImVec2(-0.866f,-0.750f) * r;
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c = ImVec2(+0.866f,-0.750f) * r;
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break;
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case ImGuiDir_Left:
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case ImGuiDir_Right:
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if (dir == ImGuiDir_Left) r = -r;
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a = ImVec2(+0.750f,+0.000f) * r;
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b = ImVec2(-0.750f,+0.866f) * r;
|
||||
c = ImVec2(-0.750f,-0.866f) * r;
|
||||
break;
|
||||
case ImGuiDir_None:
|
||||
case ImGuiDir_COUNT:
|
||||
IM_ASSERT(0);
|
||||
break;
|
||||
}
|
||||
|
||||
g.CurrentWindow->DrawList->AddTriangleFilled(center + a, center + b, center + c, GetColorU32(ImGuiCol_Text));
|
||||
}
|
||||
|
||||
void ImGui::RenderBullet(ImVec2 pos)
|
||||
{
|
||||
ImGuiContext& g = *GImGui;
|
||||
ImGuiWindow* window = g.CurrentWindow;
|
||||
window->DrawList->AddCircleFilled(pos, g.FontSize*0.20f, GetColorU32(ImGuiCol_Text), 8);
|
||||
}
|
||||
|
||||
void ImGui::RenderCheckMark(ImVec2 pos, ImU32 col, float sz)
|
||||
{
|
||||
ImGuiContext& g = *GImGui;
|
||||
ImGuiWindow* window = g.CurrentWindow;
|
||||
|
||||
float thickness = ImMax(sz / 5.0f, 1.0f);
|
||||
sz -= thickness*0.5f;
|
||||
pos += ImVec2(thickness*0.25f, thickness*0.25f);
|
||||
|
||||
float third = sz / 3.0f;
|
||||
float bx = pos.x + third;
|
||||
float by = pos.y + sz - third*0.5f;
|
||||
window->DrawList->PathLineTo(ImVec2(bx - third, by - third));
|
||||
window->DrawList->PathLineTo(ImVec2(bx, by));
|
||||
window->DrawList->PathLineTo(ImVec2(bx + third*2, by - third*2));
|
||||
window->DrawList->PathStroke(col, false, thickness);
|
||||
}
|
||||
|
||||
void ImGui::RenderNavHighlight(const ImRect& bb, ImGuiID id, ImGuiNavHighlightFlags flags)
|
||||
{
|
||||
ImGuiContext& g = *GImGui;
|
||||
if (id != g.NavId)
|
||||
return;
|
||||
if (g.NavDisableHighlight && !(flags & ImGuiNavHighlightFlags_AlwaysDraw))
|
||||
return;
|
||||
ImGuiWindow* window = ImGui::GetCurrentWindow();
|
||||
if (window->DC.NavHideHighlightOneFrame)
|
||||
return;
|
||||
|
||||
float rounding = (flags & ImGuiNavHighlightFlags_NoRounding) ? 0.0f : g.Style.FrameRounding;
|
||||
ImRect display_rect = bb;
|
||||
display_rect.ClipWith(window->ClipRect);
|
||||
if (flags & ImGuiNavHighlightFlags_TypeDefault)
|
||||
{
|
||||
const float THICKNESS = 2.0f;
|
||||
const float DISTANCE = 3.0f + THICKNESS * 0.5f;
|
||||
display_rect.Expand(ImVec2(DISTANCE,DISTANCE));
|
||||
bool fully_visible = window->ClipRect.Contains(display_rect);
|
||||
if (!fully_visible)
|
||||
window->DrawList->PushClipRect(display_rect.Min, display_rect.Max);
|
||||
window->DrawList->AddRect(display_rect.Min + ImVec2(THICKNESS*0.5f,THICKNESS*0.5f), display_rect.Max - ImVec2(THICKNESS*0.5f,THICKNESS*0.5f), GetColorU32(ImGuiCol_NavHighlight), rounding, ImDrawCornerFlags_All, THICKNESS);
|
||||
if (!fully_visible)
|
||||
window->DrawList->PopClipRect();
|
||||
}
|
||||
if (flags & ImGuiNavHighlightFlags_TypeThin)
|
||||
{
|
||||
window->DrawList->AddRect(display_rect.Min, display_rect.Max, GetColorU32(ImGuiCol_NavHighlight), rounding, ~0, 1.0f);
|
||||
}
|
||||
}
|
||||
|
||||
// Calculate text size. Text can be multi-line. Optionally ignore text after a ## marker.
|
||||
// CalcTextSize("") should return ImVec2(0.0f, GImGui->FontSize)
|
||||
ImVec2 ImGui::CalcTextSize(const char* text, const char* text_end, bool hide_text_after_double_hash, float wrap_width)
|
||||
@ -4339,7 +4346,7 @@ const ImGuiResizeGripDef resize_grip_def[4] =
|
||||
{ ImVec2(1,0), ImVec2(-1,+1), 9,12 }, // Upper right
|
||||
};
|
||||
|
||||
static ImRect GetBorderRect(ImGuiWindow* window, int border_n, float perp_padding, float thickness)
|
||||
static ImRect GetResizeBorderRect(ImGuiWindow* window, int border_n, float perp_padding, float thickness)
|
||||
{
|
||||
ImRect rect = window->Rect();
|
||||
if (thickness == 0.0f) rect.Max -= ImVec2(1,1);
|
||||
@ -4403,7 +4410,7 @@ static void ImGui::UpdateManualResize(ImGuiWindow* window, const ImVec2& size_au
|
||||
const float BORDER_SIZE = 5.0f; // FIXME: Only works _inside_ window because of HoveredWindow check.
|
||||
const float BORDER_APPEAR_TIMER = 0.05f; // Reduce visual noise
|
||||
bool hovered, held;
|
||||
ImRect border_rect = GetBorderRect(window, border_n, grip_hover_size, BORDER_SIZE);
|
||||
ImRect border_rect = GetResizeBorderRect(window, border_n, grip_hover_size, BORDER_SIZE);
|
||||
ButtonBehavior(border_rect, window->GetID((void*)(intptr_t)(border_n + 4)), &hovered, &held, ImGuiButtonFlags_FlattenChildren);
|
||||
if ((hovered && g.HoveredIdTimer > BORDER_APPEAR_TIMER) || held)
|
||||
{
|
||||
@ -4873,7 +4880,7 @@ bool ImGui::Begin(const char* name, bool* p_open, ImGuiWindowFlags flags)
|
||||
window->DrawList->AddRect(window->Pos, window->Pos + window->Size, GetColorU32(ImGuiCol_Border), window_rounding, ImDrawCornerFlags_All, window_border_size);
|
||||
if (border_held != -1)
|
||||
{
|
||||
ImRect border = GetBorderRect(window, border_held, grip_draw_size, 0.0f);
|
||||
ImRect border = GetResizeBorderRect(window, border_held, grip_draw_size, 0.0f);
|
||||
window->DrawList->AddLine(border.Min, border.Max, GetColorU32(ImGuiCol_SeparatorActive), ImMax(1.0f, window_border_size));
|
||||
}
|
||||
if (style.FrameBorderSize > 0 && !(flags & ImGuiWindowFlags_NoTitleBar))
|
||||
|
||||
Loading…
Reference in New Issue
Block a user