Faster imagescale code
Blit() rewritten git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@1585 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Robert Roebling
parent
cf45d1f4b3
commit
6e13c1965f
@ -133,9 +133,9 @@ void MyCanvas::OnPaint( wxPaintEvent &WXUNUSED(event) )
|
||||
dc.SetPen( *wxWHITE_PEN );
|
||||
dc.DrawRectangle( 150, 30, 100, 100 );
|
||||
|
||||
if (my_horse->Ok()) dc.DrawBitmap( *my_horse, 30, 140 );
|
||||
|
||||
if (my_anti->Ok()) dc.DrawBitmap( *my_anti, 250, 140 );
|
||||
|
||||
if (my_horse->Ok()) dc.DrawBitmap( *my_horse, 30, 140 );
|
||||
}
|
||||
|
||||
void MyCanvas::CreateAntiAliasedBitmap()
|
||||
|
||||
@ -163,18 +163,22 @@ wxImage wxImage::Scale( int width, int height )
|
||||
if (M_IMGDATA->m_hasMask)
|
||||
image.SetMaskColour( M_IMGDATA->m_maskRed, M_IMGDATA->m_maskGreen, M_IMGDATA->m_maskBlue );
|
||||
|
||||
double xscale = (double)width / (double)M_IMGDATA->m_width;
|
||||
double yscale = (double)height / (double)M_IMGDATA->m_height;
|
||||
long old_height = M_IMGDATA->m_height;
|
||||
long old_width = M_IMGDATA->m_width;
|
||||
|
||||
for (int j = 0; j < height; j++)
|
||||
char unsigned *source_data = M_IMGDATA->m_data;
|
||||
char unsigned *target_data = data;
|
||||
|
||||
for (long j = 0; j < height; j++)
|
||||
{
|
||||
for (int i = 0; i < width; i++)
|
||||
long y_offset = (j * old_height / height) * old_width;
|
||||
|
||||
for (long i = 0; i < width; i++)
|
||||
{
|
||||
int new_pos = 3*(j*width + i);
|
||||
int old_pos = 3*((long)(j/yscale)*M_IMGDATA->m_width + (long)(i/xscale));
|
||||
data[ new_pos ] = M_IMGDATA->m_data[ old_pos ];
|
||||
data[ new_pos+1 ] = M_IMGDATA->m_data[ old_pos+1 ];
|
||||
data[ new_pos+2 ] = M_IMGDATA->m_data[ old_pos+2 ];
|
||||
memcpy( target_data,
|
||||
source_data + 3*(y_offset + ((i * old_width )/ width)),
|
||||
3 );
|
||||
target_data += 3;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
@ -511,6 +511,8 @@ void wxWindowDC::DrawBitmap( const wxBitmap &bitmap, long x, long y, bool useMas
|
||||
|
||||
if (!bitmap.Ok()) return;
|
||||
|
||||
/* scale/translate size and position */
|
||||
|
||||
int xx = XLOG2DEV(x);
|
||||
int yy = YLOG2DEV(y);
|
||||
|
||||
@ -520,6 +522,8 @@ void wxWindowDC::DrawBitmap( const wxBitmap &bitmap, long x, long y, bool useMas
|
||||
int ww = XLOG2DEVREL(w);
|
||||
int hh = YLOG2DEVREL(h);
|
||||
|
||||
/* scale bitmap if required */
|
||||
|
||||
wxBitmap use_bitmap;
|
||||
|
||||
if ((w != ww) || (h != hh))
|
||||
@ -534,6 +538,8 @@ void wxWindowDC::DrawBitmap( const wxBitmap &bitmap, long x, long y, bool useMas
|
||||
use_bitmap = bitmap;
|
||||
}
|
||||
|
||||
/* apply mask if any */
|
||||
|
||||
GdkBitmap *mask = (GdkBitmap *) NULL;
|
||||
if (use_bitmap.GetMask()) mask = use_bitmap.GetMask()->GetBitmap();
|
||||
|
||||
@ -543,8 +549,23 @@ void wxWindowDC::DrawBitmap( const wxBitmap &bitmap, long x, long y, bool useMas
|
||||
gdk_gc_set_clip_origin( m_penGC, xx, yy );
|
||||
}
|
||||
|
||||
/* draw XPixmap or XBitmap, depending on what the wxBitmap contains */
|
||||
|
||||
GdkPixmap *pm = use_bitmap.GetPixmap();
|
||||
gdk_draw_pixmap( m_window, m_penGC, pm, 0, 0, xx, yy, -1, -1 );
|
||||
if (pm)
|
||||
{
|
||||
gdk_draw_pixmap( m_window, m_penGC, pm, 0, 0, xx, yy, -1, -1 );
|
||||
}
|
||||
else
|
||||
{
|
||||
GdkBitmap *bm = use_bitmap.GetBitmap();
|
||||
if (bm)
|
||||
{
|
||||
gdk_draw_bitmap( m_window, m_penGC, bm, 0, 0, xx, yy, -1, -1 );
|
||||
}
|
||||
}
|
||||
|
||||
/* remove mask again if any */
|
||||
|
||||
if (useMask && mask)
|
||||
{
|
||||
@ -559,93 +580,170 @@ void wxWindowDC::DrawBitmap( const wxBitmap &bitmap, long x, long y, bool useMas
|
||||
bool wxWindowDC::Blit( long xdest, long ydest, long width, long height,
|
||||
wxDC *source, long xsrc, long ysrc, int logical_func, bool useMask )
|
||||
{
|
||||
/* this is the nth try to get this utterly useless function to
|
||||
work. it now completely ignores the scaling or translation
|
||||
of the source dc, but scales correctly on the target dc and
|
||||
knows about possible mask information in a memory dc. */
|
||||
|
||||
wxCHECK_MSG( Ok(), FALSE, "invalid window dc" );
|
||||
|
||||
wxCHECK_MSG( source, FALSE, "invalid source dc" );
|
||||
|
||||
wxClientDC *srcDC = (wxClientDC*)source;
|
||||
wxMemoryDC *memDC = (wxMemoryDC*)source;
|
||||
|
||||
bool use_bitmap_method = FALSE;
|
||||
|
||||
if (srcDC->m_isMemDC)
|
||||
{
|
||||
if (!memDC->m_selected.Ok()) return FALSE;
|
||||
|
||||
/* we use the "XCopyArea" way to copy a memory dc into
|
||||
y different window if the memory dc BOTH
|
||||
a) doesn't have any mask or its mask isn't used
|
||||
b) it is clipped.
|
||||
we HAVE TO use the direct way for memory dcs
|
||||
that have mask since the XCopyArea doesn't know
|
||||
about masks and we SHOULD use the direct way if
|
||||
all of the bitmap in the memory dc is copied in
|
||||
which case XCopyArea wouldn't be able able to
|
||||
boost performace by reducing the area to be scaled */
|
||||
|
||||
use_bitmap_method = ( (useMask && (memDC->m_selected.GetMask())) ||
|
||||
((xsrc == 0) && (ysrc == 0) &&
|
||||
(width == memDC->m_selected.GetWidth()) &&
|
||||
(height == memDC->m_selected.GetHeight()) )
|
||||
);
|
||||
}
|
||||
|
||||
CalcBoundingBox( xdest, ydest );
|
||||
CalcBoundingBox( xdest + width, ydest + height );
|
||||
|
||||
int old_logical_func = m_logicalFunction;
|
||||
SetLogicalFunction( logical_func );
|
||||
|
||||
wxClientDC *csrc = (wxClientDC*)source;
|
||||
|
||||
if (csrc->m_isMemDC)
|
||||
if (use_bitmap_method)
|
||||
{
|
||||
wxMemoryDC* srcDC = (wxMemoryDC*)source;
|
||||
GdkPixmap* pmap = srcDC->m_selected.GetPixmap();
|
||||
if (pmap)
|
||||
/* scale/translate bitmap size */
|
||||
|
||||
long bm_width = memDC->m_selected.GetWidth();
|
||||
long bm_height = memDC->m_selected.GetHeight();
|
||||
|
||||
long bm_ww = XLOG2DEVREL( bm_width );
|
||||
long bm_hh = YLOG2DEVREL( bm_height );
|
||||
|
||||
/* scale bitmap if required */
|
||||
|
||||
wxBitmap use_bitmap;
|
||||
|
||||
if ((bm_width != bm_ww) || (bm_height != bm_hh))
|
||||
{
|
||||
long xx = XLOG2DEV(xdest);
|
||||
long yy = YLOG2DEV(ydest);
|
||||
wxImage image( memDC->m_selected );
|
||||
image = image.Scale( bm_ww, bm_hh );
|
||||
|
||||
GdkBitmap *mask = (GdkBitmap *) NULL;
|
||||
if (srcDC->m_selected.GetMask()) mask = srcDC->m_selected.GetMask()->GetBitmap();
|
||||
|
||||
if (useMask && mask)
|
||||
{
|
||||
gdk_gc_set_clip_mask( m_penGC, mask );
|
||||
gdk_gc_set_clip_origin( m_penGC, xx, yy );
|
||||
}
|
||||
|
||||
gdk_draw_pixmap( m_window, m_penGC, pmap,
|
||||
source->LogicalToDeviceX(xsrc),
|
||||
source->LogicalToDeviceY(ysrc),
|
||||
xx,
|
||||
yy,
|
||||
source->LogicalToDeviceXRel(width),
|
||||
source->LogicalToDeviceYRel(height) );
|
||||
|
||||
if (useMask && mask)
|
||||
{
|
||||
gdk_gc_set_clip_mask( m_penGC, (GdkBitmap *) NULL );
|
||||
gdk_gc_set_clip_origin( m_penGC, 0, 0 );
|
||||
}
|
||||
|
||||
SetLogicalFunction( old_logical_func );
|
||||
return TRUE;
|
||||
use_bitmap = image.ConvertToBitmap();
|
||||
}
|
||||
else
|
||||
{
|
||||
use_bitmap = memDC->m_selected;
|
||||
}
|
||||
|
||||
GdkBitmap* bmap = srcDC->m_selected.GetBitmap();
|
||||
if (bmap)
|
||||
/* scale/translate size and position */
|
||||
|
||||
long xx = XLOG2DEV(xdest);
|
||||
long yy = YLOG2DEV(ydest);
|
||||
|
||||
long ww = XLOG2DEVREL(width);
|
||||
long hh = YLOG2DEVREL(height);
|
||||
|
||||
/* apply mask if any */
|
||||
|
||||
GdkBitmap *mask = (GdkBitmap *) NULL;
|
||||
if (use_bitmap.GetMask()) mask = use_bitmap.GetMask()->GetBitmap();
|
||||
|
||||
if (useMask && mask)
|
||||
{
|
||||
long xx = XLOG2DEV(xdest);
|
||||
long yy = YLOG2DEV(ydest);
|
||||
gdk_gc_set_clip_mask( m_penGC, mask );
|
||||
gdk_gc_set_clip_origin( m_penGC, xx, yy );
|
||||
}
|
||||
|
||||
GdkBitmap *mask = (GdkBitmap *) NULL;
|
||||
if (srcDC->m_selected.GetMask()) mask = srcDC->m_selected.GetMask()->GetBitmap();
|
||||
/* draw XPixmap or XBitmap, depending on what the wxBitmap contains */
|
||||
|
||||
if (useMask && mask)
|
||||
GdkPixmap *pm = use_bitmap.GetPixmap();
|
||||
if (pm)
|
||||
{
|
||||
gdk_draw_pixmap( m_window, m_penGC, pm, 0, 0, xx, yy, ww, hh );
|
||||
}
|
||||
else
|
||||
{
|
||||
GdkBitmap *bm = use_bitmap.GetBitmap();
|
||||
if (bm)
|
||||
{
|
||||
gdk_gc_set_clip_mask( m_penGC, mask );
|
||||
gdk_gc_set_clip_origin( m_penGC, xx, yy );
|
||||
}
|
||||
gdk_draw_bitmap( m_window, m_penGC, bm, 0, 0, xx, yy, ww, hh );
|
||||
}
|
||||
}
|
||||
|
||||
gdk_draw_bitmap( m_window, m_textGC, bmap,
|
||||
source->LogicalToDeviceX(xsrc),
|
||||
source->LogicalToDeviceY(ysrc),
|
||||
xx,
|
||||
yy,
|
||||
source->LogicalToDeviceXRel(width),
|
||||
source->LogicalToDeviceYRel(height) );
|
||||
/* remove mask again if any */
|
||||
|
||||
if (useMask && mask)
|
||||
{
|
||||
gdk_gc_set_clip_mask( m_penGC, (GdkBitmap *) NULL );
|
||||
gdk_gc_set_clip_origin( m_penGC, 0, 0 );
|
||||
}
|
||||
|
||||
SetLogicalFunction( old_logical_func );
|
||||
return TRUE;
|
||||
if (useMask && mask)
|
||||
{
|
||||
gdk_gc_set_clip_mask( m_penGC, (GdkBitmap *) NULL );
|
||||
gdk_gc_set_clip_origin( m_penGC, 0, 0 );
|
||||
}
|
||||
}
|
||||
else /* use_bitmap_method */
|
||||
{
|
||||
/* scale/translate size and position */
|
||||
|
||||
gdk_window_copy_area ( m_window, m_penGC,
|
||||
XLOG2DEV(xdest), YLOG2DEV(ydest),
|
||||
csrc->GetWindow(),
|
||||
source->LogicalToDeviceX(xsrc),
|
||||
source->LogicalToDeviceY(ysrc),
|
||||
source->LogicalToDeviceXRel(width),
|
||||
source->LogicalToDeviceYRel(height) );
|
||||
long xx = XLOG2DEV(xdest);
|
||||
long yy = YLOG2DEV(ydest);
|
||||
|
||||
long ww = XLOG2DEVREL(width);
|
||||
long hh = YLOG2DEVREL(height);
|
||||
|
||||
if ((width != ww) || (height != hh))
|
||||
{
|
||||
/* draw source window into a bitmap as we cannot scale
|
||||
a window in contrast to a bitmap. this would actually
|
||||
work with memory dcs as well, but we'd lose the mask
|
||||
information and waste one step in this process since
|
||||
a memory already has a bitmap. all this is slightly
|
||||
inefficient as we could take an XImage directly from
|
||||
an X window, but we'd then also have to care that
|
||||
the window is not outside the screen (in which case
|
||||
we'd get a BadMatch or what not).
|
||||
Is a double XGetImage and combined XGetPixel and
|
||||
XPutPixel really faster? I'm not sure. look at wxXt
|
||||
for a different implementation of the same problem. */
|
||||
|
||||
wxBitmap bitmap( width, height );
|
||||
gdk_window_copy_area( bitmap.GetPixmap(), m_penGC, 0, 0,
|
||||
srcDC->GetWindow(),
|
||||
xsrc, ysrc, width, height );
|
||||
|
||||
/* scale image */
|
||||
|
||||
wxImage image( bitmap );
|
||||
image = image.Scale( ww, hh );
|
||||
|
||||
/* convert to bitmap */
|
||||
|
||||
bitmap = image.ConvertToBitmap();
|
||||
|
||||
/* draw scaled bitmap */
|
||||
|
||||
gdk_draw_pixmap( m_window, m_penGC, bitmap.GetPixmap(), 0, 0, xx, yy, -1, -1 );
|
||||
|
||||
}
|
||||
else
|
||||
{
|
||||
/* no scaling and not a memory dc with a mask either */
|
||||
|
||||
gdk_window_copy_area( m_window, m_penGC, xx, yy,
|
||||
srcDC->GetWindow(),
|
||||
xsrc, ysrc, width, height );
|
||||
}
|
||||
}
|
||||
|
||||
SetLogicalFunction( old_logical_func );
|
||||
return TRUE;
|
||||
|
||||
@ -511,6 +511,8 @@ void wxWindowDC::DrawBitmap( const wxBitmap &bitmap, long x, long y, bool useMas
|
||||
|
||||
if (!bitmap.Ok()) return;
|
||||
|
||||
/* scale/translate size and position */
|
||||
|
||||
int xx = XLOG2DEV(x);
|
||||
int yy = YLOG2DEV(y);
|
||||
|
||||
@ -520,6 +522,8 @@ void wxWindowDC::DrawBitmap( const wxBitmap &bitmap, long x, long y, bool useMas
|
||||
int ww = XLOG2DEVREL(w);
|
||||
int hh = YLOG2DEVREL(h);
|
||||
|
||||
/* scale bitmap if required */
|
||||
|
||||
wxBitmap use_bitmap;
|
||||
|
||||
if ((w != ww) || (h != hh))
|
||||
@ -534,6 +538,8 @@ void wxWindowDC::DrawBitmap( const wxBitmap &bitmap, long x, long y, bool useMas
|
||||
use_bitmap = bitmap;
|
||||
}
|
||||
|
||||
/* apply mask if any */
|
||||
|
||||
GdkBitmap *mask = (GdkBitmap *) NULL;
|
||||
if (use_bitmap.GetMask()) mask = use_bitmap.GetMask()->GetBitmap();
|
||||
|
||||
@ -543,8 +549,23 @@ void wxWindowDC::DrawBitmap( const wxBitmap &bitmap, long x, long y, bool useMas
|
||||
gdk_gc_set_clip_origin( m_penGC, xx, yy );
|
||||
}
|
||||
|
||||
/* draw XPixmap or XBitmap, depending on what the wxBitmap contains */
|
||||
|
||||
GdkPixmap *pm = use_bitmap.GetPixmap();
|
||||
gdk_draw_pixmap( m_window, m_penGC, pm, 0, 0, xx, yy, -1, -1 );
|
||||
if (pm)
|
||||
{
|
||||
gdk_draw_pixmap( m_window, m_penGC, pm, 0, 0, xx, yy, -1, -1 );
|
||||
}
|
||||
else
|
||||
{
|
||||
GdkBitmap *bm = use_bitmap.GetBitmap();
|
||||
if (bm)
|
||||
{
|
||||
gdk_draw_bitmap( m_window, m_penGC, bm, 0, 0, xx, yy, -1, -1 );
|
||||
}
|
||||
}
|
||||
|
||||
/* remove mask again if any */
|
||||
|
||||
if (useMask && mask)
|
||||
{
|
||||
@ -559,93 +580,170 @@ void wxWindowDC::DrawBitmap( const wxBitmap &bitmap, long x, long y, bool useMas
|
||||
bool wxWindowDC::Blit( long xdest, long ydest, long width, long height,
|
||||
wxDC *source, long xsrc, long ysrc, int logical_func, bool useMask )
|
||||
{
|
||||
/* this is the nth try to get this utterly useless function to
|
||||
work. it now completely ignores the scaling or translation
|
||||
of the source dc, but scales correctly on the target dc and
|
||||
knows about possible mask information in a memory dc. */
|
||||
|
||||
wxCHECK_MSG( Ok(), FALSE, "invalid window dc" );
|
||||
|
||||
wxCHECK_MSG( source, FALSE, "invalid source dc" );
|
||||
|
||||
wxClientDC *srcDC = (wxClientDC*)source;
|
||||
wxMemoryDC *memDC = (wxMemoryDC*)source;
|
||||
|
||||
bool use_bitmap_method = FALSE;
|
||||
|
||||
if (srcDC->m_isMemDC)
|
||||
{
|
||||
if (!memDC->m_selected.Ok()) return FALSE;
|
||||
|
||||
/* we use the "XCopyArea" way to copy a memory dc into
|
||||
y different window if the memory dc BOTH
|
||||
a) doesn't have any mask or its mask isn't used
|
||||
b) it is clipped.
|
||||
we HAVE TO use the direct way for memory dcs
|
||||
that have mask since the XCopyArea doesn't know
|
||||
about masks and we SHOULD use the direct way if
|
||||
all of the bitmap in the memory dc is copied in
|
||||
which case XCopyArea wouldn't be able able to
|
||||
boost performace by reducing the area to be scaled */
|
||||
|
||||
use_bitmap_method = ( (useMask && (memDC->m_selected.GetMask())) ||
|
||||
((xsrc == 0) && (ysrc == 0) &&
|
||||
(width == memDC->m_selected.GetWidth()) &&
|
||||
(height == memDC->m_selected.GetHeight()) )
|
||||
);
|
||||
}
|
||||
|
||||
CalcBoundingBox( xdest, ydest );
|
||||
CalcBoundingBox( xdest + width, ydest + height );
|
||||
|
||||
int old_logical_func = m_logicalFunction;
|
||||
SetLogicalFunction( logical_func );
|
||||
|
||||
wxClientDC *csrc = (wxClientDC*)source;
|
||||
|
||||
if (csrc->m_isMemDC)
|
||||
if (use_bitmap_method)
|
||||
{
|
||||
wxMemoryDC* srcDC = (wxMemoryDC*)source;
|
||||
GdkPixmap* pmap = srcDC->m_selected.GetPixmap();
|
||||
if (pmap)
|
||||
/* scale/translate bitmap size */
|
||||
|
||||
long bm_width = memDC->m_selected.GetWidth();
|
||||
long bm_height = memDC->m_selected.GetHeight();
|
||||
|
||||
long bm_ww = XLOG2DEVREL( bm_width );
|
||||
long bm_hh = YLOG2DEVREL( bm_height );
|
||||
|
||||
/* scale bitmap if required */
|
||||
|
||||
wxBitmap use_bitmap;
|
||||
|
||||
if ((bm_width != bm_ww) || (bm_height != bm_hh))
|
||||
{
|
||||
long xx = XLOG2DEV(xdest);
|
||||
long yy = YLOG2DEV(ydest);
|
||||
wxImage image( memDC->m_selected );
|
||||
image = image.Scale( bm_ww, bm_hh );
|
||||
|
||||
GdkBitmap *mask = (GdkBitmap *) NULL;
|
||||
if (srcDC->m_selected.GetMask()) mask = srcDC->m_selected.GetMask()->GetBitmap();
|
||||
|
||||
if (useMask && mask)
|
||||
{
|
||||
gdk_gc_set_clip_mask( m_penGC, mask );
|
||||
gdk_gc_set_clip_origin( m_penGC, xx, yy );
|
||||
}
|
||||
|
||||
gdk_draw_pixmap( m_window, m_penGC, pmap,
|
||||
source->LogicalToDeviceX(xsrc),
|
||||
source->LogicalToDeviceY(ysrc),
|
||||
xx,
|
||||
yy,
|
||||
source->LogicalToDeviceXRel(width),
|
||||
source->LogicalToDeviceYRel(height) );
|
||||
|
||||
if (useMask && mask)
|
||||
{
|
||||
gdk_gc_set_clip_mask( m_penGC, (GdkBitmap *) NULL );
|
||||
gdk_gc_set_clip_origin( m_penGC, 0, 0 );
|
||||
}
|
||||
|
||||
SetLogicalFunction( old_logical_func );
|
||||
return TRUE;
|
||||
use_bitmap = image.ConvertToBitmap();
|
||||
}
|
||||
else
|
||||
{
|
||||
use_bitmap = memDC->m_selected;
|
||||
}
|
||||
|
||||
GdkBitmap* bmap = srcDC->m_selected.GetBitmap();
|
||||
if (bmap)
|
||||
/* scale/translate size and position */
|
||||
|
||||
long xx = XLOG2DEV(xdest);
|
||||
long yy = YLOG2DEV(ydest);
|
||||
|
||||
long ww = XLOG2DEVREL(width);
|
||||
long hh = YLOG2DEVREL(height);
|
||||
|
||||
/* apply mask if any */
|
||||
|
||||
GdkBitmap *mask = (GdkBitmap *) NULL;
|
||||
if (use_bitmap.GetMask()) mask = use_bitmap.GetMask()->GetBitmap();
|
||||
|
||||
if (useMask && mask)
|
||||
{
|
||||
long xx = XLOG2DEV(xdest);
|
||||
long yy = YLOG2DEV(ydest);
|
||||
gdk_gc_set_clip_mask( m_penGC, mask );
|
||||
gdk_gc_set_clip_origin( m_penGC, xx, yy );
|
||||
}
|
||||
|
||||
GdkBitmap *mask = (GdkBitmap *) NULL;
|
||||
if (srcDC->m_selected.GetMask()) mask = srcDC->m_selected.GetMask()->GetBitmap();
|
||||
/* draw XPixmap or XBitmap, depending on what the wxBitmap contains */
|
||||
|
||||
if (useMask && mask)
|
||||
GdkPixmap *pm = use_bitmap.GetPixmap();
|
||||
if (pm)
|
||||
{
|
||||
gdk_draw_pixmap( m_window, m_penGC, pm, 0, 0, xx, yy, ww, hh );
|
||||
}
|
||||
else
|
||||
{
|
||||
GdkBitmap *bm = use_bitmap.GetBitmap();
|
||||
if (bm)
|
||||
{
|
||||
gdk_gc_set_clip_mask( m_penGC, mask );
|
||||
gdk_gc_set_clip_origin( m_penGC, xx, yy );
|
||||
}
|
||||
gdk_draw_bitmap( m_window, m_penGC, bm, 0, 0, xx, yy, ww, hh );
|
||||
}
|
||||
}
|
||||
|
||||
gdk_draw_bitmap( m_window, m_textGC, bmap,
|
||||
source->LogicalToDeviceX(xsrc),
|
||||
source->LogicalToDeviceY(ysrc),
|
||||
xx,
|
||||
yy,
|
||||
source->LogicalToDeviceXRel(width),
|
||||
source->LogicalToDeviceYRel(height) );
|
||||
/* remove mask again if any */
|
||||
|
||||
if (useMask && mask)
|
||||
{
|
||||
gdk_gc_set_clip_mask( m_penGC, (GdkBitmap *) NULL );
|
||||
gdk_gc_set_clip_origin( m_penGC, 0, 0 );
|
||||
}
|
||||
|
||||
SetLogicalFunction( old_logical_func );
|
||||
return TRUE;
|
||||
if (useMask && mask)
|
||||
{
|
||||
gdk_gc_set_clip_mask( m_penGC, (GdkBitmap *) NULL );
|
||||
gdk_gc_set_clip_origin( m_penGC, 0, 0 );
|
||||
}
|
||||
}
|
||||
else /* use_bitmap_method */
|
||||
{
|
||||
/* scale/translate size and position */
|
||||
|
||||
gdk_window_copy_area ( m_window, m_penGC,
|
||||
XLOG2DEV(xdest), YLOG2DEV(ydest),
|
||||
csrc->GetWindow(),
|
||||
source->LogicalToDeviceX(xsrc),
|
||||
source->LogicalToDeviceY(ysrc),
|
||||
source->LogicalToDeviceXRel(width),
|
||||
source->LogicalToDeviceYRel(height) );
|
||||
long xx = XLOG2DEV(xdest);
|
||||
long yy = YLOG2DEV(ydest);
|
||||
|
||||
long ww = XLOG2DEVREL(width);
|
||||
long hh = YLOG2DEVREL(height);
|
||||
|
||||
if ((width != ww) || (height != hh))
|
||||
{
|
||||
/* draw source window into a bitmap as we cannot scale
|
||||
a window in contrast to a bitmap. this would actually
|
||||
work with memory dcs as well, but we'd lose the mask
|
||||
information and waste one step in this process since
|
||||
a memory already has a bitmap. all this is slightly
|
||||
inefficient as we could take an XImage directly from
|
||||
an X window, but we'd then also have to care that
|
||||
the window is not outside the screen (in which case
|
||||
we'd get a BadMatch or what not).
|
||||
Is a double XGetImage and combined XGetPixel and
|
||||
XPutPixel really faster? I'm not sure. look at wxXt
|
||||
for a different implementation of the same problem. */
|
||||
|
||||
wxBitmap bitmap( width, height );
|
||||
gdk_window_copy_area( bitmap.GetPixmap(), m_penGC, 0, 0,
|
||||
srcDC->GetWindow(),
|
||||
xsrc, ysrc, width, height );
|
||||
|
||||
/* scale image */
|
||||
|
||||
wxImage image( bitmap );
|
||||
image = image.Scale( ww, hh );
|
||||
|
||||
/* convert to bitmap */
|
||||
|
||||
bitmap = image.ConvertToBitmap();
|
||||
|
||||
/* draw scaled bitmap */
|
||||
|
||||
gdk_draw_pixmap( m_window, m_penGC, bitmap.GetPixmap(), 0, 0, xx, yy, -1, -1 );
|
||||
|
||||
}
|
||||
else
|
||||
{
|
||||
/* no scaling and not a memory dc with a mask either */
|
||||
|
||||
gdk_window_copy_area( m_window, m_penGC, xx, yy,
|
||||
srcDC->GetWindow(),
|
||||
xsrc, ysrc, width, height );
|
||||
}
|
||||
}
|
||||
|
||||
SetLogicalFunction( old_logical_func );
|
||||
return TRUE;
|
||||
|
||||
Loading…
Reference in New Issue
Block a user