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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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13
docs/latex/wx/bitmap.tex
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@ -98,9 +98,9 @@ If all possible wxWindows settings are used, the Windows platform supports BMP f
XPM data, and XPM. Under wxGTK, the available formats are BMP file, XPM data, XPM file, and PNG file.
Under wxMotif, the available formats are XBM data, XBM file, XPM data, XPM file.
In addition, wxBitmap can read all formats that \helpref{wxImage}{wximage} can
(wxBITMAP\_TYPE\_JPEG, wxBITMAP\_TYPE\_PNG, wxBITMAP\_TYPE\_GIF, wxBITMAP\_TYPE\_PCX, wxBITMAP\_TYPE\_PNM).
(Of course you must have wxImage handlers loaded.) }
In addition, wxBitmap can read all formats that \helpref{wxImage}{wximage} can, which currently include
wxBITMAP\_TYPE\_JPEG, wxBITMAP\_TYPE\_TIF, wxBITMAP\_TYPE\_PNG, wxBITMAP\_TYPE\_GIF, wxBITMAP\_TYPE\_PCX,
and wxBITMAP\_TYPE\_PNM. Of course, you must have wxImage handlers loaded. }
\wxheading{Remarks}
@ -312,6 +312,13 @@ Gets the width of the bitmap in pixels.
\helpref{wxBitmap::GetHeight}{wxbitmapgetheight}
\membersection{wxBitmap::GetSubBitmap}\label{wxbitmapgetsubbitmap}
\constfunc{wxBitmap}{GetSubBitmap}{\param{const wxRect&}{rect}}
Returns a sub bitmap of the current one as long as the rect belongs entirely to
the bitmap. This function preserves bit depth and mask information.
\membersection{wxBitmap::InitStandardHandlers}
\func{static void}{InitStandardHandlers}{\void}

6
docs/latex/wx/mask.tex
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@ -37,8 +37,7 @@ Constructs a mask from a monochrome bitmap.
\func{}{wxMask}{\param{const wxBitmap\& }{bitmap}, \param{const wxColour\& }{colour}}
Constructs a mask from a bitmap and a colour that indicates the background. Not
yet implemented for GTK.
Constructs a mask from a bitmap and a colour that indicates the background.
\pythonnote{wxPython has an alternate wxMask constructor matching this
form called \tt{wxMaskColour}.}
@ -70,8 +69,7 @@ Constructs a mask from a monochrome bitmap.
\func{bool}{Create}{\param{const wxBitmap\& }{bitmap}, \param{const wxColour\& }{colour}}
Constructs a mask from a bitmap and a colour that indicates the background. Not
yet implemented for GTK.
Constructs a mask from a bitmap and a colour that indicates the background.
\func{bool}{Create}{\param{const wxBitmap\& }{bitmap}, \param{int}{ index}}

54
src/gtk/bitmap.cpp
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@ -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),

54
src/gtk1/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),