427 lines
10 KiB
C
427 lines
10 KiB
C
////////////////////////////////////////////////////////////
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//~ Key types
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#define UI_NilKey ((UI_Key) { 0 })
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#define UI_RootKey ((UI_Key) { 0xa3deb3749ef35a7aUll })
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Struct(UI_Key)
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{
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u64 hash;
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};
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////////////////////////////////////////////////////////////
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//~ Size types
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Enum(UI_SizeKind)
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{
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UI_SizeKind_Pixel, /* Exact size */
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UI_SizeKind_Fill, /* Size as percent of parent size */
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UI_SizeKind_Fit, /* Size to contents */
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};
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Struct(UI_Size)
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{
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UI_SizeKind kind;
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f32 v;
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f32 strictness;
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};
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////////////////////////////////////////////////////////////
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//~ Rounding types
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Enum(UI_RoundKind)
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{
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UI_RoundKind_Pixel, /* Exact radius */
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UI_RoundKind_Fill, /* Radius as percent of size */
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};
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Struct(UI_Round)
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{
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UI_RoundKind kind;
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f32 v;
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};
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////////////////////////////////////////////////////////////
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//~ Alignment types
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Enum(UI_Alignment)
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{
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UI_Alignment_TopLeft,
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UI_Alignment_Top,
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UI_Alignment_TopRight,
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UI_Alignment_Left,
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UI_Alignment_Center,
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UI_Alignment_Right,
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UI_Alignment_BottomLeft,
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UI_Alignment_Bottom,
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UI_Alignment_BottomRight,
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};
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Enum(UI_AxisAlignment)
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{
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UI_AxisAlignment_Start,
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UI_AxisAlignment_Center,
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UI_AxisAlignment_End,
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};
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////////////////////////////////////////////////////////////
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//~ Checkpoint types
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Struct(UI_Checkpoint)
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{
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UI_Checkpoint *next;
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u64 v;
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};
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////////////////////////////////////////////////////////////
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//~ Box flags
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Enum(UI_BoxFlag)
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{
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UI_BoxFlag_None = 0,
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UI_BoxFlag_DrawText = (1 << 0),
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UI_BoxFlag_Interactable = (1 << 1),
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UI_BoxFlag_NoTextTruncation = (1 << 2),
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UI_BoxFlag_Floating = (1 << 3),
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UI_BoxFlag_NoFloatingClamp = (1 << 4),
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};
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////////////////////////////////////////////////////////////
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//~ Style types
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#define UI_StyleKindsXMacro(x) \
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x(Flags, UI_BoxFlag) \
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x(Parent, struct UI_Box *) \
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x(Tag, u64) \
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x(ChildLayoutAxis, Axis) \
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x(ChildAlignmentX, UI_AxisAlignment) \
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x(ChildAlignmentY, UI_AxisAlignment) \
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x(Width, UI_Size) \
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x(Height, UI_Size) \
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x(BackgroundColor, u32) \
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x(BorderColor, u32) \
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x(DebugColor, u32) \
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x(Tint, u32) \
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x(Border, f32) \
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x(FloatingPos, Vec2) \
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x(Rounding, UI_Round) \
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x(Font, ResourceKey) \
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x(FontSize, u32) \
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x(Text, String) \
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/* ----------------------------------- */ \
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/* --------- Virtual styles --------- */ \
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/* ----------------------------------- */ \
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x(BeginVirtualStyles_, i8) \
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x(ChildAlignment, UI_Alignment) \
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x(AxisSize, UI_Size) \
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/* ------------------------------------------- */
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Enum(UI_StyleKind)
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{
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#define X(name, type) UI_StyleKind_##name,
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UI_StyleKind_None,
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UI_StyleKindsXMacro(X)
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UI_StyleKind_Count,
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#undef X
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};
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Struct(UI_Style)
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{
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UI_StyleKind kind;
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/* Union of all style fields */
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union
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{
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#define X(name, type) type name;
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UI_StyleKindsXMacro(X)
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#undef X
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};
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};
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Struct(UI_StyleDesc)
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{
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Axis axis;
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UI_Style style;
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/* Push */
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b32 pop_when_used;
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b32 override;
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/* Pop */
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b32 force_pop;
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b32 use;
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};
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Struct(UI_StyleNode)
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{
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UI_StyleNode *next;
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UI_Style style;
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b32 pop_when_used;
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b32 override;
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u64 checkpoint;
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};
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Struct(UI_Stack)
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{
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UI_Stack *next;
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UI_Checkpoint *top_checkpoint;
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UI_StyleNode *style_tops[UI_StyleKind_Count];
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};
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////////////////////////////////////////////////////////////
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//~ Report types
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Struct(UI_Report)
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{
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b32 m1_held;
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f32 hovered;
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f32 hot;
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f32 active;
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b32 m1_downs;
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b32 m1_ups;
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b32 m1_presses;
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Vec2 last_m1_offset;
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/* Where was this box last rendered in screen coordinates */
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Vec2 screen_p0;
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Vec2 screen_p1;
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};
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////////////////////////////////////////////////////////////
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//~ Box types
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Struct(UI_Box)
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{
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//- Hash list
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UI_Box *next_in_bin;
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UI_Box *prev_in_bin;
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//- Tree
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UI_Box *parent;
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UI_Box *first;
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UI_Box *last;
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UI_Box *next;
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UI_Box *prev;
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u64 count;
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//- Persistent data
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UI_Key key;
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UI_Report report;
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//- Per-build data
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UI_BoxFlag flags;
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GPU_Resource *background_texture;
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Vec2 background_texture_uv0;
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Vec2 background_texture_uv1;
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UI_Size pref_size[Axis_CountXY];
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UI_Round rounding;
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u32 background_color;
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u32 border_color;
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u32 debug_color;
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u32 text_color;
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u32 tint;
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f32 border;
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Vec2 floating_pos;
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String text;
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ResourceKey font_resource;
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f32 font_size;
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Axis child_layout_axis;
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UI_AxisAlignment child_alignment[Axis_CountXY];
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//- Pre-layout data
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u64 pre_index;
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u64 post_index;
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//- Layout data
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F_Run glyph_run;
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F_Font *font;
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f32 layout_cursor;
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f32 solved_dims[Axis_CountXY];
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f32 final_children_size_accum[Axis_CountXY];
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//- Post-layout data
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Vec2 p0;
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Vec2 p1;
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f32 rounding_tl;
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f32 rounding_tr;
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f32 rounding_br;
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f32 rounding_bl;
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};
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Struct(UI_BoxBin)
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{
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UI_Box *first;
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UI_Box *last;
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};
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////////////////////////////////////////////////////////////
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//~ Frame types
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Enum(UI_FrameFlag)
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{
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UI_FrameFlag_None = 0,
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UI_FrameFlag_Debug = (1 << 0),
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UI_FrameFlag_Vsync = (1 << 1),
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};
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Struct(UI_Frame)
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{
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WND_Frame window_frame;
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Vec2 cursor_pos;
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};
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////////////////////////////////////////////////////////////
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//~ State types
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#define UI_NumBoxLookupBins 16384
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Struct(UI_SharedState)
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{
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//- Control state
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i64 last_frame_begin_ns;
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Vec2 cursor_pos;
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UI_Key hovered_box;
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UI_Key active_box;
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//- Build state
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Arena *build_arena;
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Arena *back_build_arena;
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UI_FrameFlag frame_flags;
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UI_FrameFlag back_frame_flags;
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UI_BoxBin *box_bins;
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UI_BoxBin *back_box_bins;
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UI_Box *root_box;
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UI_Box *back_root_box;
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u64 boxes_count;
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u64 back_boxes_count;
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UI_Stack *top_stack;
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UI_Stack *first_free_stack;
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UI_Checkpoint *first_free_checkpoint;
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UI_StyleNode *first_free_style_node;
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//- Layout state
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UI_Box **boxes_pre;
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UI_Box **boxes_post;
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UI_Box **back_boxes_pre;
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UI_Box **back_boxes_post;
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//- Render state
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GPU_Resource *render_target;
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GPU_Swapchain *swapchain;
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i64 gpu_submit_fence_target;
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GPU_TransientBuffer draw_rects_tbuff;
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Arena *draw_rects_arena;
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} extern UI_shared_state;
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////////////////////////////////////////////////////////////
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//~ Startup
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void UI_Startup(void);
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////////////////////////////////////////////////////////////
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//~ Font helpers
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ResourceKey UI_GetDefaultFontResource(void);
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////////////////////////////////////////////////////////////
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//~ Key helpers
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UI_Key UI_KeyFromString(String str);
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UI_Key UI_KeyF_(String fmt, ...);
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#define UI_KeyF(fmt_cstr, ...) UI_KeyF_(StringFromCstrNoLimit(fmt_cstr), __VA_ARGS__, FmtEnd)
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UI_Box *UI_BackBoxFromKey(UI_Key key);
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UI_Box *UI_FrontBoxFromKey(UI_Key key);
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////////////////////////////////////////////////////////////
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//~ String helpers
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String UI_StringF_(String fmt, ...);
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#define UI_StringF(fmt_cstr, ...) UI_StringF_(StringFromCstrNoLimit(fmt_cstr), __VA_ARGS__, FmtEnd)
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////////////////////////////////////////////////////////////
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//~ Checkpoint helpers
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UI_Box *UI_PushCP(UI_Box *parent);
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void UI_PopCP(void);
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////////////////////////////////////////////////////////////
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//~ Style stack helpers
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void UI_PushEmptyStack(void);
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void UI_PopStack(void);
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void UI_PushStyle(UI_StyleDesc desc);
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UI_Style UI_PopStyle(UI_StyleDesc desc);
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#define UI_STYLEDESC(name, ...) (UI_StyleDesc) { .style.kind = UI_StyleKind_##name, __VA_ARGS__ }
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#define UI_SetNext(name, ...) UI_PushStyle(UI_STYLEDESC(name, .pop_when_used = 1, .style.name = __VA_ARGS__))
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#define UI_Push(name, ...) UI_PushStyle(UI_STYLEDESC(name, .style.name = __VA_ARGS__))
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#define UI_ForceNext(name, ...) UI_PushStyle(UI_STYLEDESC(name, .pop_when_used = 1, .forced = 1, .style.name = __VA_ARGS__))
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#define UI_ForcePush(name, ...) UI_PushStyle(UI_STYLEDESC(name, .forced = 1, .style.name = __VA_ARGS__))
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#define UI_Pop(name, ...) UI_PopStyle(UI_STYLEDESC(name, .forced_pop = 1, __VA_ARGS__)).name
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#define UI_PeekTop(name, ...) UI_PopStyle(UI_STYLEDESC(name, __VA_ARGS__)).name
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#define UI_UseTop(name, ...) UI_PopStyle(UI_STYLEDESC(name, .use = 1, __VA_ARGS__)).name
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#define UI_PushCopy(name, src, ...) do { \
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UI_StyleDesc _new = src; \
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_new.style.kind = UI_StyleKind_##name; \
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_new.style.name = __VA_ARGS__; \
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UI_PushStyle(_new); \
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} while (0)
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////////////////////////////////////////////////////////////
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//~ Size helpers
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#define UI_SIZE(_kind, _v, _s) (UI_Size) { .kind = (_kind), .v = (_v), .strictness = (_s) }
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#define UI_PIX(_v, _s) UI_SIZE(UI_SizeKind_Pixel, (_v), (_s))
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#define UI_FIT(_s) UI_SIZE(UI_SizeKind_Fit, 0, (_s))
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#define UI_FILL(_v, _s) UI_SIZE(UI_SizeKind_Fill, (_v), (_s))
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#define UI_FNT(_v, _s) UI_SIZE(UI_SizeKind_Pixel, (f32)UI_PeekTop(FontSize) * (_v), (_s))
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////////////////////////////////////////////////////////////
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//~ Rounding helpers
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#define UI_ROUND(_kind, _v) (UI_Round) { .kind = (_kind), .v = (_v)}
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#define UI_RPIX(_v) UI_ROUND(UI_RoundKind_Pixel, (_v))
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#define UI_RFILL(_v) UI_ROUND(UI_RoundKind_Fill, (_v))
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////////////////////////////////////////////////////////////
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//~ Box
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UI_Box *UI_BuildBox(UI_Key key);
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void UI_SetBackgroundTexture(UI_Box *box, GPU_Resource *texture, Vec2 uv0, Vec2 uv1);
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b32 UI_IsPointInBox(UI_Box *box, Vec2 point);
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////////////////////////////////////////////////////////////
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//~ Report
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UI_Report UI_ReportFromKey(UI_Key key);
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////////////////////////////////////////////////////////////
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//~ Begin frame
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UI_Frame UI_BeginFrame(UI_FrameFlag frame_flags);
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////////////////////////////////////////////////////////////
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//~ End build
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GPU_ResourceDesc UI_GetRenderTargetDesc(Vec2I32 size);
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i64 UI_EndFrame(UI_Frame frame);
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