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Wrote wxMask(bitmap,colour).

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Some docs for it and wxBitmap::GetSubBitmap().


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@5110 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Robert Roebling
1999-12-25 11:25:53 +00:00
parent 605d715ddd
commit f9ee644eac
4 changed files with 84 additions and 43 deletions
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54
src/gtk/bitmap.cpp
View File

@@ -15,6 +15,7 @@
#include "wx/icon.h"
#include "wx/filefn.h"
#include "wx/image.h"
#include "wx/dcmemory.h"
#include <gdk/gdk.h>
#include <gdk/gdkprivate.h>
@@ -67,14 +68,18 @@ bool wxMask::Create( const wxBitmap& bitmap,
wxImage image( bitmap );
if (!image.Ok()) return FALSE;
GdkVisual *visual = gdk_visual_get_system();
GdkImage *mask_image = gdk_image_new( GDK_IMAGE_FASTEST, visual, image.GetWidth(), image.GetHeight() );
if (!mask_image) return FALSE;
GdkWindow *parent = (GdkWindow*) &gdk_root_parent;
m_bitmap = gdk_pixmap_new( parent, image.GetWidth(), image.GetHeight(), 1 );
GdkGC *gc = gdk_gc_new( m_bitmap );
GdkColor color;
color.red = 65000;
color.green = 65000;
color.blue = 65000;
color.pixel = 1;
gdk_gc_set_foreground( gc, &color );
gdk_gc_set_fill( gc, GDK_SOLID );
gdk_draw_rectangle( m_bitmap, gc, TRUE, 0, 0, image.GetWidth(), image.GetHeight() );
unsigned char *data = image.GetData();
int index = 0;
@@ -83,6 +88,7 @@ bool wxMask::Create( const wxBitmap& bitmap,
unsigned char green = colour.Green();
unsigned char blue = colour.Blue();
GdkVisual *visual = gdk_visual_get_system();
int bpp = visual->depth;
if ((bpp == 16) && (visual->red_mask != 0xf800)) bpp = 15;
if (bpp == 15)
@@ -98,30 +104,42 @@ bool wxMask::Create( const wxBitmap& bitmap,
green = green & 0xf8;
}
color.red = 0;
color.green = 0;
color.blue = 0;
color.pixel = 0;
gdk_gc_set_foreground( gc, &color );
for (int j = 0; j < image.GetHeight(); j++)
for (int i = 0; i < image.GetWidth(); i++)
{
int start_x = -1;
int i;
for (i = 0; i < image.GetWidth(); i++)
{
if ((data[index] == red) &&
(data[index+1] == green) &&
(data[index+2] == blue))
{
gdk_image_put_pixel( mask_image, i, j, 1 );
if (start_x == -1)
start_x = i;
}
else
{
gdk_image_put_pixel( mask_image, i, j, 1 );
}
index += 3;
}
if (start_x != -1)
{
gdk_draw_line( m_bitmap, gc, start_x, j, i-1, j );
start_x = -1;
}
}
index += 3;
}
if (start_x != -1)
gdk_draw_line( m_bitmap, gc, start_x, j, i, j );
}
GdkGC *mask_gc = gdk_gc_new( m_bitmap );
gdk_gc_unref( gc );
gdk_draw_image( m_bitmap, mask_gc, mask_image, 0, 0, 0, 0, image.GetWidth(), image.GetHeight() );
gdk_gc_unref( mask_gc );
gdk_image_destroy( mask_image );
return FALSE;
return TRUE;
}
bool wxMask::Create( const wxBitmap& WXUNUSED(bitmap),