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Fix issue with previous commit : crash when previewing pictures with non-square pixels

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git-svn-id: svn://pulkomandy.tk/GrafX2/trunk@1593 416bcca6-2ee7-4201-b75f-2eb2f807beb1
This commit is contained in:
Yves Rizoud 2010-08-25 19:40:52 +00:00
parent 236a026137
commit 38be354d7b
1 changed files with 17 additions and 6 deletions
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23
src/loadsave.c
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@ -194,15 +194,15 @@ void Set_pixel(T_IO_Context *context, short x_pos, short y_pos, byte color)
Pixel_ratio != PIXEL_WIDE &&
Pixel_ratio != PIXEL_WIDE2)
{
context->Preview_bitmap[x_pos/context->Preview_factor_X*2 + (y_pos/context->Preview_factor_Y)*PREVIEW_WIDTH*Menu_factor_X*2]=color;
context->Preview_bitmap[x_pos/context->Preview_factor_X*2+1 + (y_pos/context->Preview_factor_Y)*PREVIEW_WIDTH*Menu_factor_X*2]=color;
context->Preview_bitmap[x_pos/context->Preview_factor_X*2 + (y_pos/context->Preview_factor_Y)*PREVIEW_WIDTH*Menu_factor_X]=color;
context->Preview_bitmap[x_pos/context->Preview_factor_X*2+1 + (y_pos/context->Preview_factor_Y)*PREVIEW_WIDTH*Menu_factor_X]=color;
}
else if (context->Ratio == PIXEL_TALL &&
Pixel_ratio != PIXEL_TALL &&
Pixel_ratio != PIXEL_TALL2)
{
context->Preview_bitmap[x_pos/context->Preview_factor_X + (y_pos/context->Preview_factor_Y)*PREVIEW_WIDTH*Menu_factor_X*2]=color;
context->Preview_bitmap[x_pos/context->Preview_factor_X + (y_pos/context->Preview_factor_Y)*PREVIEW_WIDTH*Menu_factor_X*2+1]=color;
context->Preview_bitmap[x_pos/context->Preview_factor_X + (y_pos/context->Preview_factor_Y*2)*PREVIEW_WIDTH*Menu_factor_X]=color;
context->Preview_bitmap[x_pos/context->Preview_factor_X + (y_pos/context->Preview_factor_Y*2+1)*PREVIEW_WIDTH*Menu_factor_X]=color;
}
else
context->Preview_bitmap[x_pos/context->Preview_factor_X + (y_pos/context->Preview_factor_Y)*PREVIEW_WIDTH*Menu_factor_X]=color;
@ -827,9 +827,20 @@ void Load_image(T_IO_Context *context)
else if (context->Preview_bitmap)
{
int x_pos,y_pos;
int width,height;
width=context->Width/context->Preview_factor_X;
height=context->Height/context->Preview_factor_Y;
if (context->Ratio == PIXEL_WIDE &&
Pixel_ratio != PIXEL_WIDE &&
Pixel_ratio != PIXEL_WIDE2)
width*=2;
else if (context->Ratio == PIXEL_TALL &&
Pixel_ratio != PIXEL_TALL &&
Pixel_ratio != PIXEL_TALL2)
height*=2;
for (y_pos=0; y_pos<context->Height/context->Preview_factor_Y;y_pos++)
for (x_pos=0; x_pos<context->Width/context->Preview_factor_X;x_pos++)
for (y_pos=0; y_pos<height;y_pos++)
for (x_pos=0; x_pos<width;x_pos++)
{
byte color=context->Preview_bitmap[x_pos+y_pos*PREVIEW_WIDTH*Menu_factor_X];