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Updated bitmap blitting code as per 2_4


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@24211 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Robert Roebling 2003-10-17 14:28:52 +00:00
parent a2e268df19
commit 551b5391ae
4 changed files with 66 additions and 30 deletions
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10
src/gtk/bitmap.cpp
View File

@ -414,10 +414,18 @@ 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++)
{
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] );
if (bpp==1)
{
if (!pixval)

28
src/gtk/dcclient.cpp
View File

@ -1270,11 +1270,14 @@ bool wxWindowDC::DoBlit( wxCoord xdest, wxCoord ydest,
wxCoord bm_width = memDC->m_selected.GetWidth();
wxCoord bm_height = memDC->m_selected.GetHeight();
// get clip coords
wxRegion tmp( xx,yy,ww,hh );
tmp.Intersect( m_currentClippingRegion );
wxCoord cx,cy,cw,ch;
tmp.GetBox(cx,cy,cw,ch);
// Get clip coords for the bitmap. If we don't
// use wxBitmap::Rescale(), which can clip the
// bitmap, these are the same as the original
// coordinates
wxCoord cx = xx;
wxCoord cy = yy;
wxCoord cw = ww;
wxCoord ch = hh;
// interpret userscale of src too
double xsc,ysc;
@ -1285,16 +1288,23 @@ bool wxWindowDC::DoBlit( wxCoord xdest, wxCoord ydest,
wxCoord bm_ww = XLOG2DEVREL( bm_width );
wxCoord bm_hh = YLOG2DEVREL( bm_height );
// scale bitmap if required
// Scale bitmap if required
wxBitmap use_bitmap;
if ((bm_width != bm_ww) || (bm_height != bm_hh))
{
// This indicates that the blitting code below will get
// a clipped bitmap and therefore needs to move the origin
// accordingly
wxRegion tmp( xx,yy,ww,hh );
tmp.Intersect( m_currentClippingRegion );
tmp.GetBox(cx,cy,cw,ch);
// Scale and clipped bitmap
use_bitmap = memDC->m_selected.Rescale(cx-xx,cy-yy,cw,ch,bm_ww,bm_hh);
}
else
{
// FIXME: use cx,cy,cw,ch here, too?
// Don't scale bitmap
use_bitmap = memDC->m_selected;
}
@ -1463,7 +1473,7 @@ void wxWindowDC::DoDrawText( const wxString &text, wxCoord x, wxCoord y )
int w,h;
if (abs(m_scaleY - 1.0) < 0.00001)
if (fabs(m_scaleY - 1.0) < 0.00001)
{
// If there is a user or actually any scale applied to
// the device context, scale the font.

10
src/gtk1/bitmap.cpp
View File

@ -414,10 +414,18 @@ 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++)
{
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] );
if (bpp==1)
{
if (!pixval)

28
src/gtk1/dcclient.cpp
View File

@ -1270,11 +1270,14 @@ bool wxWindowDC::DoBlit( wxCoord xdest, wxCoord ydest,
wxCoord bm_width = memDC->m_selected.GetWidth();
wxCoord bm_height = memDC->m_selected.GetHeight();
// get clip coords
wxRegion tmp( xx,yy,ww,hh );
tmp.Intersect( m_currentClippingRegion );
wxCoord cx,cy,cw,ch;
tmp.GetBox(cx,cy,cw,ch);
// Get clip coords for the bitmap. If we don't
// use wxBitmap::Rescale(), which can clip the
// bitmap, these are the same as the original
// coordinates
wxCoord cx = xx;
wxCoord cy = yy;
wxCoord cw = ww;
wxCoord ch = hh;
// interpret userscale of src too
double xsc,ysc;
@ -1285,16 +1288,23 @@ bool wxWindowDC::DoBlit( wxCoord xdest, wxCoord ydest,
wxCoord bm_ww = XLOG2DEVREL( bm_width );
wxCoord bm_hh = YLOG2DEVREL( bm_height );
// scale bitmap if required
// Scale bitmap if required
wxBitmap use_bitmap;
if ((bm_width != bm_ww) || (bm_height != bm_hh))
{
// This indicates that the blitting code below will get
// a clipped bitmap and therefore needs to move the origin
// accordingly
wxRegion tmp( xx,yy,ww,hh );
tmp.Intersect( m_currentClippingRegion );
tmp.GetBox(cx,cy,cw,ch);
// Scale and clipped bitmap
use_bitmap = memDC->m_selected.Rescale(cx-xx,cy-yy,cw,ch,bm_ww,bm_hh);
}
else
{
// FIXME: use cx,cy,cw,ch here, too?
// Don't scale bitmap
use_bitmap = memDC->m_selected;
}
@ -1463,7 +1473,7 @@ void wxWindowDC::DoDrawText( const wxString &text, wxCoord x, wxCoord y )
int w,h;
if (abs(m_scaleY - 1.0) < 0.00001)
if (fabs(m_scaleY - 1.0) < 0.00001)
{
// If there is a user or actually any scale applied to
// the device context, scale the font.