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Further corrections to bitmap and blit code.

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git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@24227 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Robert Roebling
2003-10-18 19:23:19 +00:00
parent 7d88f0992a
commit f9ebac93e7
3 changed files with 117 additions and 45 deletions
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62
src/gtk1/bitmap.cpp
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@@ -417,16 +417,20 @@ wxBitmap wxBitmap::Rescale( int clipx, int clipy, int clipwidth, int clipheight,
int old_x = -1;
guint32 old_pixval;
for (int w=0; w<width; w++)
for (int w = 0; w < width; w++)
{
guint32 pixval;
int x = tablex[w];
if (x == old_x)
pixval = old_pixval;
else
{
pixval = gdk_image_get_pixel( img, x, tabley[h] );
old_pixval = pixval;
old_x = x;
}
if (bpp==1)
if (bpp == 1)
{
if (!pixval)
{
@@ -437,7 +441,7 @@ wxBitmap wxBitmap::Rescale( int clipx, int clipy, int clipwidth, int clipheight,
if ((w+1)%8==0)
{
dst[h*dstbyteperline+w/8]=~outbyte;
dst[h*dstbyteperline+w/8] = outbyte;
outbyte = 0;
}
}
@@ -451,8 +455,8 @@ wxBitmap wxBitmap::Rescale( int clipx, int clipy, int clipwidth, int clipheight,
}
// do not forget the last byte
if (bpp == 1)
dst[h*dstbyteperline+width/8] = ~outbyte;
if ((bpp == 1) && (width % 8 != 0))
dst[h*dstbyteperline+width/8] = outbyte;
}
gdk_image_destroy( img );
@@ -466,9 +470,8 @@ wxBitmap wxBitmap::Rescale( int clipx, int clipy, int clipwidth, int clipheight,
if (GetMask())
{
bpp = 1;
dstbyteperline = width/8*bpp;
if (width*bpp % 8 != 0)
dstbyteperline = width/8;
if (width % 8 != 0)
dstbyteperline++;
dst = (char*) malloc(dstbyteperline*height);
img = gdk_image_get( GetMask()->GetBitmap(), 0, 0, GetWidth(), GetHeight() );
@@ -476,10 +479,22 @@ wxBitmap wxBitmap::Rescale( int clipx, int clipy, int clipwidth, int clipheight,
for (int h = 0; h < height; h++)
{
char outbyte = 0;
int old_x = -1;
guint32 old_pixval;
for (int w=0; w<width; w++)
for (int w = 0; w < width; w++)
{
guint32 pixval = gdk_image_get_pixel( img, tablex[w], tabley[h] );
guint32 pixval;
int x = tablex[w];
if (x == old_x)
pixval = old_pixval;
else
{
pixval = gdk_image_get_pixel( img, x, tabley[h] );
old_pixval = pixval;
old_x = x;
}
if (pixval)
{
char bit=1;
@@ -487,22 +502,21 @@ wxBitmap wxBitmap::Rescale( int clipx, int clipy, int clipwidth, int clipheight,
outbyte |= shift;
}
if ((w+1)%8==0)
if ((w+1)%8 == 0)
{
dst[h*dstbyteperline+w/8]=~outbyte;
dst[h*dstbyteperline+w/8] = outbyte;
outbyte = 0;
}
}
// do not forget the last byte
if (bpp == 1)
dst[h*dstbyteperline+width/8] = ~outbyte;
if (width % 8 != 0)
dst[h*dstbyteperline+width/8] = outbyte;
}
wxBitmap mask_bmp( (const char *)dst, width, height, 1 );
wxMask* mask = new wxMask(mask_bmp);
wxMask* mask = new wxMask;
mask->m_bitmap = gdk_bitmap_create_from_data( wxGetRootWindow()->window, (gchar *) dst, width, height );
bmp.SetMask(mask);
free( dst );
gdk_image_destroy( img );
}
@@ -1130,6 +1144,11 @@ wxBitmap wxBitmap::GetSubBitmap( const wxRect& rect) const
else
{
GdkGC *gc = gdk_gc_new( ret.GetBitmap() );
GdkColor col;
col.pixel = 0xFFFFFF;
gdk_gc_set_foreground( gc, &col );
col.pixel = 0;
gdk_gc_set_background( gc, &col );
gdk_wx_draw_bitmap( ret.GetBitmap(), gc, GetBitmap(), rect.x, rect.y, 0, 0, rect.width, rect.height );
gdk_gc_destroy( gc );
}
@@ -1140,7 +1159,12 @@ wxBitmap wxBitmap::GetSubBitmap( const wxRect& rect) const
mask->m_bitmap = gdk_pixmap_new( wxGetRootWindow()->window, rect.width, rect.height, 1 );
GdkGC *gc = gdk_gc_new( mask->m_bitmap );
gdk_wx_draw_bitmap( mask->m_bitmap, gc, M_BMPDATA->m_mask->m_bitmap, 0, 0, rect.x, rect.y, rect.width, rect.height );
GdkColor col;
col.pixel = 0xFFFFFF;
gdk_gc_set_foreground( gc, &col );
col.pixel = 0;
gdk_gc_set_background( gc, &col );
gdk_wx_draw_bitmap( mask->m_bitmap, gc, M_BMPDATA->m_mask->m_bitmap, rect.x, rect.y, 0, 0, rect.width, rect.height );
gdk_gc_destroy( gc );
ret.SetMask( mask );