1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
|
/*
* tkWinPixmap.c --
*
* This file contains the Xlib emulation functions pertaining to
* creating and destroying pixmaps.
*
* Copyright (c) 1995 Sun Microsystems, Inc.
*
* See the file "license.terms" for information on usage and redistribution
* of this file, and for a DISCLAIMER OF ALL WARRANTIES.
*
* RCS: @(#) $Id: tkWinPixmap.c,v 1.1.4.1 1998/09/30 02:19:36 stanton Exp $
*/
#include "tkWinInt.h"
/*
*----------------------------------------------------------------------
*
* Tk_GetPixmap --
*
* Creates an in memory drawing surface.
*
* Results:
* Returns a handle to a new pixmap.
*
* Side effects:
* Allocates a new Win32 bitmap.
*
*----------------------------------------------------------------------
*/
Pixmap
Tk_GetPixmap(display, d, width, height, depth)
Display* display;
Drawable d;
int width;
int height;
int depth;
{
TkWinDrawable *newTwdPtr, *twdPtr;
int planes;
Screen *screen;
display->request++;
newTwdPtr = (TkWinDrawable*) ckalloc(sizeof(TkWinDrawable));
newTwdPtr->type = TWD_BITMAP;
newTwdPtr->bitmap.depth = depth;
twdPtr = (TkWinDrawable *)d;
if (twdPtr->type != TWD_BITMAP) {
if (twdPtr->window.winPtr == NULL) {
newTwdPtr->bitmap.colormap = DefaultColormap(display,
DefaultScreen(display));
} else {
newTwdPtr->bitmap.colormap = twdPtr->window.winPtr->atts.colormap;
}
} else {
newTwdPtr->bitmap.colormap = twdPtr->bitmap.colormap;
}
screen = &display->screens[0];
planes = 1;
if (depth == screen->root_depth) {
planes = (int) screen->ext_data;
depth /= planes;
}
newTwdPtr->bitmap.handle = CreateBitmap(width, height, planes, depth, NULL);
if (newTwdPtr->bitmap.handle == NULL) {
ckfree((char *) newTwdPtr);
return None;
}
return (Pixmap)newTwdPtr;
}
/*
*----------------------------------------------------------------------
*
* Tk_FreePixmap --
*
* Release the resources associated with a pixmap.
*
* Results:
* None.
*
* Side effects:
* Deletes the bitmap created by Tk_GetPixmap.
*
*----------------------------------------------------------------------
*/
void
Tk_FreePixmap(display, pixmap)
Display* display;
Pixmap pixmap;
{
TkWinDrawable *twdPtr = (TkWinDrawable *) pixmap;
display->request++;
if (twdPtr != NULL) {
DeleteObject(twdPtr->bitmap.handle);
ckfree((char *)twdPtr);
}
}
/*
*----------------------------------------------------------------------
*
* TkSetPixmapColormap --
*
* The following function is a hack used by the photo widget to
* explicitly set the colormap slot of a Pixmap.
*
* Results:
* None.
*
* Side effects:
* None.
*
*----------------------------------------------------------------------
*/
void
TkSetPixmapColormap(pixmap, colormap)
Pixmap pixmap;
Colormap colormap;
{
TkWinDrawable *twdPtr = (TkWinDrawable *)pixmap;
twdPtr->bitmap.colormap = colormap;
}
/*
*----------------------------------------------------------------------
*
* XGetGeometry --
*
* Retrieve the geometry of the given drawable. Note that
* this is a degenerate implementation that only returns the
* size of a pixmap.
*
* Results:
* Returns 0.
*
* Side effects:
* None.
*
*----------------------------------------------------------------------
*/
int
XGetGeometry(display, d, root_return, x_return, y_return, width_return,
height_return, border_width_return, depth_return)
Display* display;
Drawable d;
Window* root_return;
int* x_return;
int* y_return;
unsigned int* width_return;
unsigned int* height_return;
unsigned int* border_width_return;
unsigned int* depth_return;
{
TkWinDrawable *twdPtr = (TkWinDrawable *)d;
HDC dc;
BITMAPINFO info;
if ((twdPtr->type != TWD_BITMAP) || (twdPtr->bitmap.handle == NULL)) {
panic("XGetGeometry: invalid pixmap");
}
dc = GetDC(NULL);
info.bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
info.bmiHeader.biBitCount = 0;
if (!GetDIBits(dc, twdPtr->bitmap.handle, 0, 0, NULL, &info,
DIB_RGB_COLORS)) {
panic("XGetGeometry: unable to get bitmap size");
}
ReleaseDC(NULL, dc);
*width_return = info.bmiHeader.biWidth;
*height_return = info.bmiHeader.biHeight;
return 1;
}
|
