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Internals: added FontScale storage.

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This commit is contained in:
ocornut 2024-07-02 17:21:04 +02:00
parent dadf9cd039
commit 0f63d3e916
5 changed files with 10 additions and 4 deletions
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6
imgui.cpp
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@ -3505,7 +3505,7 @@ void ImGui::RenderTextEllipsis(ImDrawList* draw_list, const ImVec2& pos_min, con
const ImFont* font = draw_list->_Data->Font;
const float font_size = draw_list->_Data->FontSize;
const float font_scale = font_size / font->FontSize;
const float font_scale = draw_list->_Data->FontScale;
const char* text_end_ellipsis = NULL;
const float ellipsis_width = font->EllipsisWidth * font_scale;
@ -3903,6 +3903,7 @@ static void SetCurrentWindow(ImGuiWindow* window)
if (window)
{
g.FontSize = g.DrawListSharedData.FontSize = window->CalcFontSize();
g.FontScale = g.FontSize / g.Font->FontSize;
ImGui::NavUpdateCurrentWindowIsScrollPushableX();
}
}
@ -7507,12 +7508,14 @@ void ImGui::SetCurrentFont(ImFont* font)
g.Font = font;
g.FontBaseSize = ImMax(1.0f, g.IO.FontGlobalScale * g.Font->FontSize * g.Font->Scale);
g.FontSize = g.CurrentWindow ? g.CurrentWindow->CalcFontSize() : 0.0f;
g.FontScale = g.FontSize / g.FontSize;
ImFontAtlas* atlas = g.Font->ContainerAtlas;
g.DrawListSharedData.TexUvWhitePixel = atlas->TexUvWhitePixel;
g.DrawListSharedData.TexUvLines = atlas->TexUvLines;
g.DrawListSharedData.Font = g.Font;
g.DrawListSharedData.FontSize = g.FontSize;
g.DrawListSharedData.FontScale = g.FontScale;
}
void ImGui::PushFont(ImFont* font)
@ -8057,6 +8060,7 @@ void ImGui::SetWindowFontScale(float scale)
ImGuiWindow* window = GetCurrentWindow();
window->FontWindowScale = scale;
g.FontSize = g.DrawListSharedData.FontSize = window->CalcFontSize();
g.FontScale = g.DrawListSharedData.FontScale = g.FontSize / g.Font->FontSize;
}
void ImGui::PushFocusScope(ImGuiID id)

2
imgui.h
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@ -3203,7 +3203,7 @@ struct ImFont
float EllipsisCharStep; // 4 // out // Step between characters when EllipsisCount > 0
bool DirtyLookupTables; // 1 // out //
float Scale; // 4 // in // = 1.f // Base font scale, multiplied by the per-window font scale which you can adjust with SetWindowFontScale()
float Ascent, Descent; // 4+4 // out // // Ascent: distance from top to bottom of e.g. 'A' [0..FontSize]
float Ascent, Descent; // 4+4 // out // // Ascent: distance from top to bottom of e.g. 'A' [0..FontSize] (unscaled)
int MetricsTotalSurface;// 4 // out // // Total surface in pixels to get an idea of the font rasterization/texture cost (not exact, we approximate the cost of padding between glyphs)
ImU8 Used4kPagesMap[(IM_UNICODE_CODEPOINT_MAX+1)/4096/8]; // 2 bytes if ImWchar=ImWchar16, 34 bytes if ImWchar==ImWchar32. Store 1-bit for each block of 4K codepoints that has one active glyph. This is mainly used to facilitate iterations across all used codepoints.

2
imgui_internal.h
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@ -775,6 +775,7 @@ struct IMGUI_API ImDrawListSharedData
ImVec2 TexUvWhitePixel; // UV of white pixel in the atlas
ImFont* Font; // Current/default font (optional, for simplified AddText overload)
float FontSize; // Current/default font size (optional, for simplified AddText overload)
float FontScale; // Current/default font scale (== FontSize / Font->FontSize)
float CurveTessellationTol; // Tessellation tolerance when using PathBezierCurveTo()
float CircleSegmentMaxError; // Number of circle segments to use per pixel of radius for AddCircle() etc
ImVec4 ClipRectFullscreen; // Value for PushClipRectFullscreen()
@ -1927,6 +1928,7 @@ struct ImGuiContext
ImFont* Font; // (Shortcut) == FontStack.empty() ? IO.Font : FontStack.back()
float FontSize; // (Shortcut) == FontBaseSize * g.CurrentWindow->FontWindowScale == window->FontSize(). Text height for current window.
float FontBaseSize; // (Shortcut) == IO.FontGlobalScale * Font->Scale * Font->FontSize. Base text height.
float FontScale; // == FontSize / Font->FontSize
float CurrentDpiScale; // Current window/viewport DpiScale
ImDrawListSharedData DrawListSharedData;
double Time;

2
imgui_tables.cpp
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@ -3269,7 +3269,7 @@ void ImGui::TableAngledHeadersRowEx(ImGuiID row_id, float angle, float max_label
ButtonBehavior(row_r, row_id, NULL, NULL);
KeepAliveID(row_id);
const float ascent_scaled = g.Font->Ascent * (g.FontSize / g.Font->FontSize); // FIXME: Standardize those scaling factors better
const float ascent_scaled = g.Font->Ascent * g.FontScale; // FIXME: Standardize those scaling factors better
const float line_off_for_ascent_x = (ImMax((g.FontSize - ascent_scaled) * 0.5f, 0.0f) / -sin_a) * (flip_label ? -1.0f : 1.0f);
const ImVec2 padding = g.Style.CellPadding; // We will always use swapped component
const ImVec2 align = g.Style.TableAngledHeadersTextAlign;

2
imgui_widgets.cpp
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@ -3778,7 +3778,7 @@ namespace ImStb
static int STB_TEXTEDIT_STRINGLEN(const ImGuiInputTextState* obj) { return obj->CurLenW; }
static ImWchar STB_TEXTEDIT_GETCHAR(const ImGuiInputTextState* obj, int idx) { IM_ASSERT(idx <= obj->CurLenW); return obj->TextW[idx]; }
static float STB_TEXTEDIT_GETWIDTH(ImGuiInputTextState* obj, int line_start_idx, int char_idx) { ImWchar c = obj->TextW[line_start_idx + char_idx]; if (c == '\n') return IMSTB_TEXTEDIT_GETWIDTH_NEWLINE; ImGuiContext& g = *obj->Ctx; return g.Font->GetCharAdvance(c) * (g.FontSize / g.Font->FontSize); }
static float STB_TEXTEDIT_GETWIDTH(ImGuiInputTextState* obj, int line_start_idx, int char_idx) { ImWchar c = obj->TextW[line_start_idx + char_idx]; if (c == '\n') return IMSTB_TEXTEDIT_GETWIDTH_NEWLINE; ImGuiContext& g = *obj->Ctx; return g.Font->GetCharAdvance(c) * g.FontScale; }
static int STB_TEXTEDIT_KEYTOTEXT(int key) { return key >= 0x200000 ? 0 : key; }
static ImWchar STB_TEXTEDIT_NEWLINE = '\n';
static void STB_TEXTEDIT_LAYOUTROW(StbTexteditRow* r, ImGuiInputTextState* obj, int line_start_idx)