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Fixed layout/pixel-perfect issues in various widgets (w/ g_LEGACY_STROKES toggle)

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This commit is contained in:
Mikko Mononen
2026-04-28 18:28:22 +02:00
committed by ocornut
parent 9169879d80
commit 0935ae6bba
3 changed files with 89 additions and 14 deletions
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65
imgui_widgets.cpp
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@@ -901,6 +901,8 @@ bool ImGui::ArrowButton(const char* str_id, ImGuiDir dir)
return ArrowButtonEx(str_id, dir, ImVec2(sz, sz), ImGuiButtonFlags_None);
}
extern bool g_LEGACY_STROKES;
// Button to close a window
bool ImGui::CloseButton(ImGuiID id, const ImVec2& pos)
{
@@ -930,7 +932,7 @@ bool ImGui::CloseButton(ImGuiID id, const ImVec2& pos)
window->DrawList->AddRectFilled(bb.Min, bb.Max, bg_col);
RenderNavCursor(bb, id, ImGuiNavRenderCursorFlags_Compact);
const ImU32 cross_col = GetColorU32(ImGuiCol_Text);
const ImVec2 cross_center = bb.GetCenter() - ImVec2(0.5f, 0.5f);
const ImVec2 cross_center = g_LEGACY_STROKES ? (bb.GetCenter() - ImVec2(0.5f, 0.5f)) : bb.GetCenter();
const float cross_extent = g.FontSize * 0.5f * 0.7071f - 1.0f;
const float cross_thickness = 1.0f * (float)(int)g.Style._MainScale; // FIXME-DPI
window->DrawList->AddLine(cross_center + ImVec2(+cross_extent, +cross_extent), cross_center + ImVec2(-cross_extent, -cross_extent), cross_col, cross_thickness);
@@ -1762,7 +1764,11 @@ void ImGui::SeparatorTextEx(ImGuiID id, const char* label, const char* label_end
const float sep1_x1 = pos.x;
const float sep2_x2 = bb.Max.x;
const float seps_y = ImTrunc((bb.Min.y + bb.Max.y) * 0.5f + 0.999f);
float seps_y;
if (g_LEGACY_STROKES)
seps_y = ImTrunc((bb.Min.y + bb.Max.y) * 0.5f + 0.999f);
else
seps_y = ImTrunc((bb.Min.y + bb.Max.y) * 0.5f + (-separator_thickness * 0.5f + 1.0f) + 0.999f); // Align hline vertically, and snap to pixels.
const float label_avail_w = ImMax(0.0f, sep2_x2 - sep1_x1 - padding.x * 2.0f);
const ImVec2 label_pos(pos.x + padding.x + ImMax(0.0f, (label_avail_w - label_size.x - extra_w) * style.SeparatorTextAlign.x), pos.y + text_baseline_y); // FIXME-ALIGN
@@ -5691,7 +5697,11 @@ bool ImGui::InputTextEx(const char* label, const char* hint, char* buf, int buf_
state->CursorAnim += io.DeltaTime;
bool cursor_is_visible = (!g.IO.ConfigInputTextCursorBlink) || (state->CursorAnim <= 0.0f) || ImFmod(state->CursorAnim, 1.20f) <= 0.80f;
ImVec2 cursor_screen_pos = ImTrunc(draw_pos + cursor_offset - draw_scroll);
ImRect cursor_screen_rect(cursor_screen_pos.x, cursor_screen_pos.y - g.FontSize + 0.5f, cursor_screen_pos.x + 1.0f, cursor_screen_pos.y - 1.5f);
ImRect cursor_screen_rect;
if (g_LEGACY_STROKES)
cursor_screen_rect = ImRect(cursor_screen_pos.x, cursor_screen_pos.y - g.FontSize + 0.5f, cursor_screen_pos.x + 1.0f, cursor_screen_pos.y - 1.5f);
else
cursor_screen_rect = ImRect(cursor_screen_pos.x, cursor_screen_pos.y - g.FontSize + 1.0f, cursor_screen_pos.x + 1.0f, cursor_screen_pos.y - 1.0f);
if (cursor_is_visible && cursor_screen_rect.Overlaps(clip_rect))
draw_window->DrawList->AddLineV(cursor_screen_rect.Min.x, cursor_screen_rect.Min.y, cursor_screen_rect.Max.y, GetColorU32(ImGuiCol_InputTextCursor), style.InputTextCursorSize);
@@ -7209,16 +7219,27 @@ void ImGui::TreeNodeDrawLineToChildNode(const ImVec2& target_pos)
return;
ImGuiTreeNodeStackData* parent_data = &g.TreeNodeStack.Data[g.TreeNodeStack.Size - 1];
float x1 = ImTrunc(parent_data->DrawLinesX1);
float x1;
if (g_LEGACY_STROKES)
x1 = ImTrunc(parent_data->DrawLinesX1);
else
x1 = ImTrunc(parent_data->DrawLinesX1 - g.Style.TreeLinesSize * 0.5f) + g.Style.TreeLinesSize * 0.5f; // Draw line centered at X1, but snap to pixels boundary.
float x2 = ImTrunc(target_pos.x - g.Style.ItemInnerSpacing.x);
float y = ImTrunc(target_pos.y);
float y;
if (g_LEGACY_STROKES)
y = ImTrunc(target_pos.y);
else
y = ImTrunc(target_pos.y) + g.Style.TreeLinesSize * 0.5f;
float rounding = (g.Style.TreeLinesRounding > 0.0f) ? ImMin(x2 - x1, g.Style.TreeLinesRounding) : 0.0f;
parent_data->DrawLinesToNodesY2 = ImMax(parent_data->DrawLinesToNodesY2, y - rounding);
if (x1 >= x2)
return;
if (rounding > 0.0f)
{
x1 += 0.5f + rounding;
if (g_LEGACY_STROKES)
x1 += 0.5f + rounding;
else
x1 += rounding;
window->DrawList->PathArcToFast(ImVec2(x1, y - rounding), rounding, 6, 3);
if (x1 < x2)
window->DrawList->PathLineTo(ImVec2(x2, y));
@@ -7226,7 +7247,11 @@ void ImGui::TreeNodeDrawLineToChildNode(const ImVec2& target_pos)
}
else
{
window->DrawList->AddLineH(x1, x2, y, GetColorU32(ImGuiCol_TreeLines), g.Style.TreeLinesSize);
// We use AddLine() instead of AddLineH() as we provide coordinates for line center,
// in order to make the code use same coordinates for both rounded and non-rounded version.
if (!g_LEGACY_STROKES)
x1 += g.Style.TreeLinesSize * 0.5f; // Avoid overdraw
window->DrawList->AddLine(ImVec2(x1, y), ImVec2(x2, y), GetColorU32(ImGuiCol_TreeLines), g.Style.TreeLinesSize);
}
}
@@ -7249,10 +7274,15 @@ void ImGui::TreeNodeDrawLineToTreePop(const ImGuiTreeNodeStackData* data)
y2 = ImMin(y2, window->ClipRect.Max.y);
if (y2 <= y1)
return;
float x = ImTrunc(data->DrawLinesX1);
float x;
if (g_LEGACY_STROKES)
x = ImTrunc(data->DrawLinesX1);
else
x = ImTrunc(data->DrawLinesX1 - g.Style.TreeLinesSize * 0.5f) + g.Style.TreeLinesSize * 0.5f; // Draw line centered at X1, but snap to pixels boundary.
if (data->DrawLinesTableColumn != -1)
TablePushColumnChannel(data->DrawLinesTableColumn);
window->DrawList->AddLineV(x, y1, y2, GetColorU32(ImGuiCol_TreeLines), g.Style.TreeLinesSize);
// We use AddLine() instead of AddLineV() as we provide coordinates for line center,
window->DrawList->AddLine(ImVec2(x, y1), ImVec2(x, y2), GetColorU32(ImGuiCol_TreeLines), g.Style.TreeLinesSize);
if (data->DrawLinesTableColumn != -1)
TablePopColumnChannel();
}
@@ -10934,8 +10964,18 @@ bool ImGui::TabItemEx(ImGuiTabBar* tab_bar, const char* label, bool* p_open,
if (tab_contents_visible && (tab_bar->Flags & ImGuiTabBarFlags_DrawSelectedOverline) && style.TabBarOverlineSize > 0.0f)
{
// Might be moved to TabItemBackground() ?
ImVec2 tl = bb.GetTL() + ImVec2(0, 1.0f * g.CurrentDpiScale);
ImVec2 tr = bb.GetTR() + ImVec2(0, 1.0f * g.CurrentDpiScale);
ImVec2 tl;
ImVec2 tr;
if (g_LEGACY_STROKES)
{
tl = bb.GetTL() + ImVec2(0, 1.0f * g.CurrentDpiScale);
tr = bb.GetTR() + ImVec2(0, 1.0f * g.CurrentDpiScale);
}
else
{
tl = bb.GetTL() + ImVec2(0, style.TabBarOverlineSize * 0.5f);
tr = bb.GetTR() + ImVec2(0, style.TabBarOverlineSize * 0.5f);
}
ImU32 overline_col = GetColorU32(tab_bar_focused ? ImGuiCol_TabSelectedOverline : ImGuiCol_TabDimmedSelectedOverline);
if (style.TabRounding > 0.0f)
{
@@ -10946,7 +10986,10 @@ bool ImGui::TabItemEx(ImGuiTabBar* tab_bar, const char* label, bool* p_open,
}
else
{
if (g_LEGACY_STROKES)
display_draw_list->AddLine(tl - ImVec2(0.5f, 0.5f), tr - ImVec2(0.5f, 0.5f), overline_col, style.TabBarOverlineSize);
else
display_draw_list->AddLine(tl, tr, overline_col, style.TabBarOverlineSize);
}
}
RenderNavCursor(bb, id);