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[layers] Implemented SwapUp and SwapDown (Alt-PgUp, Alt-PgDown) to change layers order; Implemented layer merge (Alt-End); improved GIF loader to read images with optimized layers (smaller) and the ones with a transparent color different than zero.

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git-svn-id: svn://pulkomandy.tk/GrafX2/branches/layers@1077 416bcca6-2ee7-4201-b75f-2eb2f807beb1
This commit is contained in:
Yves Rizoud
2009-10-18 19:06:07 +00:00
parent abb6204757
commit 89f2173d70
6 changed files with 185 additions and 48 deletions
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5
struct.h
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@@ -340,8 +340,10 @@ typedef struct T_Page
byte File_format; ///< File format, in enum ::FILE_FORMATS
struct T_Page *Next; ///< Pointer to the next backup
struct T_Page *Prev; ///< Pointer to the previous backup
word Transparent_color; ///< Index of transparent color. -1 or 0 to 255.
byte Nb_layers; ///< Number of layers
byte * Image[0]; ///< Pixel data for the image.
byte * Image[0]; ///< Pixel data for the (first layer of) image.
// No field after Image[] ! Dynamic layer allocation for Image[1], [2] etc.
} T_Page;
/// Collection of undo/redo steps.
@@ -356,7 +358,6 @@ typedef struct
{
int Width; ///< Image width in pixels.
int Height; ///< Image height in pixels.
//int Users; ///< Number of references.
byte * Image; ///< Pixel data for the image.
} T_Image;