@ -51,10 +51,7 @@
# error "Cannot enable both IMGUI_ENABLE_FREETYPE_LUNASVG and IMGUI_ENABLE_FREETYPE_PLUTOSVG"
# endif
# ifdef IMGUI_ENABLE_FREETYPE_LUNASVG
# include FT_OTSVG_H // <freetype/otsvg.h>
# include FT_BBOX_H // <freetype/ftbbox.h>
# include <algorithm>
# include <lunasvg_c.h>
# error Lunasvg is not supported
# endif
# ifdef IMGUI_ENABLE_FREETYPE_PLUTOSVG
# include <plutosvg.h>
@ -93,14 +90,6 @@ static void* (*GImGuiFreeTypeAllocFunc)(size_t size, void* user_data) = ImGuiFre
static void ( * GImGuiFreeTypeFreeFunc ) ( void * ptr , void * user_data ) = ImGuiFreeTypeDefaultFreeFunc ;
static void * GImGuiFreeTypeAllocatorUserData = nullptr ;
// Lunasvg support
# ifdef IMGUI_ENABLE_FREETYPE_LUNASVG
static FT_Error ImGuiLunasvgPortInit ( FT_Pointer * state ) ;
static void ImGuiLunasvgPortFree ( FT_Pointer * state ) ;
static FT_Error ImGuiLunasvgPortRender ( FT_GlyphSlot slot , FT_Pointer * _state ) ;
static FT_Error ImGuiLunasvgPortPresetSlot ( FT_GlyphSlot slot , FT_Bool cache , FT_Pointer * _state ) ;
# endif
//-------------------------------------------------------------------------
// Code
//-------------------------------------------------------------------------
@ -818,13 +807,6 @@ static bool ImFontAtlasBuildWithFreeType(ImFontAtlas* atlas)
// If you don't call FT_Add_Default_Modules() the rest of code may work, but FreeType won't use our custom allocator.
FT_Add_Default_Modules ( ft_library ) ;
# ifdef IMGUI_ENABLE_FREETYPE_LUNASVG
// Install svg hooks for FreeType
// https://freetype.org/freetype2/docs/reference/ft2-properties.html#svg-hooks
// https://freetype.org/freetype2/docs/reference/ft2-svg_fonts.html#svg_fonts
SVG_RendererHooks hooks = { ImGuiLunasvgPortInit , ImGuiLunasvgPortFree , ImGuiLunasvgPortRender , ImGuiLunasvgPortPresetSlot } ;
FT_Property_Set ( ft_library , " ot-svg " , " svg-hooks " , & hooks ) ;
# endif // IMGUI_ENABLE_FREETYPE_LUNASVG
# ifdef IMGUI_ENABLE_FREETYPE_PLUTOSVG
// With plutosvg, use provided hooks
FT_Property_Set ( ft_library , " ot-svg " , " svg-hooks " , plutosvg_ft_svg_hooks ( ) ) ;
@ -850,137 +832,6 @@ void ImGuiFreeType::SetAllocatorFunctions(void* (*alloc_func)(size_t sz, void* u
GImGuiFreeTypeAllocatorUserData = user_data ;
}
# ifdef IMGUI_ENABLE_FREETYPE_LUNASVG
// For more details, see https://gitlab.freedesktop.org/freetype/freetype-demos/-/blob/master/src/rsvg-port.c
// The original code from the demo is licensed under CeCILL-C Free Software License Agreement (https://gitlab.freedesktop.org/freetype/freetype/-/blob/master/LICENSE.TXT)
struct LunasvgPortState
{
LunasvgPortState ( ) ;
~ LunasvgPortState ( ) ;
FT_Error err = FT_Err_Ok ;
lunasvg_matrix * matrix = nullptr ;
lunasvg_document * svg = nullptr ;
} ;
LunasvgPortState : : LunasvgPortState ( )
{
matrix = lunasvg_matrix_create ( ) ;
}
LunasvgPortState : : ~ LunasvgPortState ( )
{
lunasvg_matrix_destroy ( matrix ) ;
if ( svg )
lunasvg_document_destroy ( svg ) ;
}
static FT_Error ImGuiLunasvgPortInit ( FT_Pointer * _state )
{
* _state = IM_NEW ( LunasvgPortState ) ( ) ;
return FT_Err_Ok ;
}
static void ImGuiLunasvgPortFree ( FT_Pointer * _state )
{
IM_DELETE ( * ( LunasvgPortState * * ) _state ) ;
}
static FT_Error ImGuiLunasvgPortRender ( FT_GlyphSlot slot , FT_Pointer * _state )
{
LunasvgPortState * state = * ( LunasvgPortState * * ) _state ;
// If there was an error while loading the svg in ImGuiLunasvgPortPresetSlot(), the renderer hook still get called, so just returns the error.
if ( state - > err ! = FT_Err_Ok )
return state - > err ;
// rows is height, pitch (or stride) equals to width * sizeof(int32)
lunasvg_bitmap * bitmap = lunasvg_bitmap_create_with_data ( ( uint8_t * ) slot - > bitmap . buffer , slot - > bitmap . width , slot - > bitmap . rows , slot - > bitmap . pitch ) ;
lunasvg_document_set_identity_matrix ( state - > svg ) ; // Reset the svg matrix to the default value
lunasvg_document_render ( state - > svg , bitmap , state - > matrix ) ; // state->matrix is already scaled and translated
lunasvg_bitmap_destroy ( bitmap ) ;
state - > err = FT_Err_Ok ;
return state - > err ;
}
static FT_Error ImGuiLunasvgPortPresetSlot ( FT_GlyphSlot slot , FT_Bool cache , FT_Pointer * _state )
{
FT_SVG_Document document = ( FT_SVG_Document ) slot - > other ;
LunasvgPortState * state = * ( LunasvgPortState * * ) _state ;
FT_Size_Metrics & metrics = document - > metrics ;
// This function is called twice, once in the FT_Load_Glyph() and another right before ImGuiLunasvgPortRender().
// If it's the latter, don't do anything because it's // already done in the former.
if ( cache )
return state - > err ;
if ( state - > svg )
lunasvg_document_destroy ( state - > svg ) ;
state - > svg = lunasvg_document_load_from_data ( document - > svg_document , document - > svg_document_length ) ;
if ( state - > svg = = nullptr )
{
state - > err = FT_Err_Invalid_SVG_Document ;
return state - > err ;
}
lunasvg_box * box = lunasvg_box_create ( ) ;
double box_x , box_y , box_w , box_h ;
lunasvg_document_get_box ( state - > svg , box ) ;
lunasvg_box_get_values ( box , & box_x , & box_y , & box_w , & box_h ) ;
double scale = std : : min ( metrics . x_ppem / box_w , metrics . y_ppem / box_h ) ;
double xx = ( double ) document - > transform . xx / ( 1 < < 16 ) ;
double xy = - ( double ) document - > transform . xy / ( 1 < < 16 ) ;
double yx = - ( double ) document - > transform . yx / ( 1 < < 16 ) ;
double yy = ( double ) document - > transform . yy / ( 1 < < 16 ) ;
double x0 = ( double ) document - > delta . x / 64 * box_w / metrics . x_ppem ;
double y0 = - ( double ) document - > delta . y / 64 * box_h / metrics . y_ppem ;
// Scale and transform, we don't translate the svg yet
lunasvg_matrix_identity ( state - > matrix ) ;
lunasvg_matrix_scale ( state - > matrix , scale , scale ) ;
lunasvg_matrix_transform ( state - > matrix , xx , xy , yx , yy , x0 , y0 ) ;
lunasvg_document_set_matrix ( state - > svg , state - > matrix ) ;
// Pre-translate the matrix for the rendering step
lunasvg_matrix_translate ( state - > matrix , - box_x , - box_y ) ;
// Get the box again after the transformation
lunasvg_document_get_box ( state - > svg , box ) ;
lunasvg_box_get_values ( box , & box_x , & box_y , & box_w , & box_h ) ;
lunasvg_box_destroy ( box ) ;
// Calculate the bitmap size
slot - > bitmap_left = FT_Int ( box_x ) ;
slot - > bitmap_top = FT_Int ( - box_y ) ;
slot - > bitmap . rows = ( unsigned int ) ( ImCeil ( ( float ) box_h ) ) ;
slot - > bitmap . width = ( unsigned int ) ( ImCeil ( ( float ) box_w ) ) ;
slot - > bitmap . pitch = slot - > bitmap . width * 4 ;
slot - > bitmap . pixel_mode = FT_PIXEL_MODE_BGRA ;
// Compute all the bearings and set them correctly. The outline is scaled already, we just need to use the bounding box.
double metrics_width = box_w ;
double metrics_height = box_h ;
double horiBearingX = box_x ;
double horiBearingY = - box_y ;
double vertBearingX = slot - > metrics . horiBearingX / 64.0 - slot - > metrics . horiAdvance / 64.0 / 2.0 ;
double vertBearingY = ( slot - > metrics . vertAdvance / 64.0 - slot - > metrics . height / 64.0 ) / 2.0 ;
slot - > metrics . width = FT_Pos ( IM_ROUND ( metrics_width * 64.0 ) ) ; // Using IM_ROUND() assume width and height are positive
slot - > metrics . height = FT_Pos ( IM_ROUND ( metrics_height * 64.0 ) ) ;
slot - > metrics . horiBearingX = FT_Pos ( horiBearingX * 64 ) ;
slot - > metrics . horiBearingY = FT_Pos ( horiBearingY * 64 ) ;
slot - > metrics . vertBearingX = FT_Pos ( vertBearingX * 64 ) ;
slot - > metrics . vertBearingY = FT_Pos ( vertBearingY * 64 ) ;
if ( slot - > metrics . vertAdvance = = 0 )
slot - > metrics . vertAdvance = FT_Pos ( metrics_height * 1.2 * 64.0 ) ;
state - > err = FT_Err_Ok ;
return state - > err ;
}
# endif // #ifdef IMGUI_ENABLE_FREETYPE_LUNASVG
//-----------------------------------------------------------------------------
# ifdef __GNUC__
Stenzek
6 months ago