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Fix issue 496: Some animated GIF images don't load well. Also fixed the handling of transparency in preview (fileselector) and loading anim GIF as a brush loads first frame.

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git-svn-id: svn://pulkomandy.tk/GrafX2/trunk@1969 416bcca6-2ee7-4201-b75f-2eb2f807beb1
This commit is contained in:
Yves Rizoud 2012-07-12 22:27:49 +00:00
parent 2aa72730ad
commit 7613093df9
3 changed files with 42 additions and 29 deletions
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43
src/fileformats.c
View File

@ -2057,19 +2057,10 @@ void Load_GIF(T_IO_Context * context)
disposal_method = (GCE.Packed_fields >> 2) & 7;
last_delay = GCE.Delay_time;
context->Transparent_color= GCE.Transparent_color;
if (GCE.Packed_fields & 1)
{
if (number_LID == 0)
context->Background_transparent = 1;
}
else
{
if (number_LID == 0)
context->Background_transparent = 0;
}
is_transparent =
(previous_disposal_method==DISPOSAL_METHOD_DO_NOT_DISPOSE
||previous_disposal_method==DISPOSAL_METHOD_UNDEFINED);
is_transparent = GCE.Packed_fields & 1;
if (number_LID == 0)
context->Background_transparent = is_transparent;
is_transparent &= is_looping;
}
else
File_error=2;
@ -2219,20 +2210,13 @@ void Load_GIF(T_IO_Context * context)
}
else
{
if (context->Type == CONTEXT_MAIN_IMAGE)
memset(
Main_backups->Pages->Image[Main_current_layer].Pixels,
LSDB.Backcol,
Main_backups->Pages->Width*Main_backups->Pages->Height);
Fill_canvas(context, LSDB.Backcol);
}
}
else
{
if (context->Type == CONTEXT_MAIN_IMAGE)
memset(
Main_backups->Pages->Image[Main_current_layer].Pixels,
LSDB.Backcol,
Main_backups->Pages->Width*Main_backups->Pages->Height);
// First frame/layer, fill canvas with backcolor
Fill_canvas(context, LSDB.Backcol);
}
// Duration was set in the previously loaded GCE
Set_frame_duration(context, last_delay*10);
@ -2286,11 +2270,11 @@ void Load_GIF(T_IO_Context * context)
previous_width);
}
}
previous_height=IDB.Image_height;
previous_width=IDB.Image_width;
previous_pos_x=IDB.Pos_X;
previous_pos_y=IDB.Pos_Y;
}
previous_height=IDB.Image_height;
previous_width=IDB.Image_width;
previous_pos_x=IDB.Pos_X;
previous_pos_y=IDB.Pos_Y;
Palette_loaded(context);
@ -2387,6 +2371,11 @@ void Load_GIF(T_IO_Context * context)
{
goto early_exit;
}
// Same with brush
if (context->Type == CONTEXT_BRUSH && is_looping)
{
goto early_exit;
}
} // Le fichier contenait un IDB
else

24
src/loadsave.c
View File

@ -241,6 +241,28 @@ void Set_pixel(T_IO_Context *context, short x_pos, short y_pos, byte color)
}
void Fill_canvas(T_IO_Context *context, byte color)
{
switch (context->Type)
{
case CONTEXT_PREVIEW:
if (context->Current_layer!=0)
return;
memset(context->Preview_bitmap, color, PREVIEW_WIDTH*PREVIEW_HEIGHT*Menu_factor_X*Menu_factor_Y);
break;
case CONTEXT_MAIN_IMAGE:
memset(
Main_backups->Pages->Image[Main_current_layer].Pixels,
color,
Main_backups->Pages->Width*Main_backups->Pages->Height);
break;
case CONTEXT_BRUSH:
memset(context->Buffer_image, color, (long)context->Height*context->Pitch);
break;
case CONTEXT_SURFACE:
break;
}
}
void Palette_loaded(T_IO_Context *context)
{
@ -365,7 +387,7 @@ void Pre_load(T_IO_Context *context, short width, short height, long file_size,
case CONTEXT_PREVIEW:
// Préparation du chargement d'une preview:
context->Preview_bitmap=malloc(PREVIEW_WIDTH*PREVIEW_HEIGHT*Menu_factor_X*Menu_factor_Y);
context->Preview_bitmap=calloc(1, PREVIEW_WIDTH*PREVIEW_HEIGHT*Menu_factor_X*Menu_factor_Y);
if (!context->Preview_bitmap)
File_error=1;

2
src/loadsave.h
View File

@ -207,6 +207,8 @@ void Pre_load(T_IO_Context *context, short width, short height, long file_size,
void Palette_loaded(T_IO_Context *context);
/// Generic cleanup done on end of loading (ex: color-conversion from the temporary 24b buffer)
//void Post_load(T_IO_Context *context);
/// Fill the entire current layer/frame of an image being loaded with a color.
void Fill_canvas(T_IO_Context *context, byte color);
/// Query the color of a pixel (to save)
byte Get_pixel(T_IO_Context *context, short x, short y);