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
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
|
//
// "$Id$"
//
// Definition of Apple Cocoa window driver.
//
// Copyright 1998-2016 by Bill Spitzak and others.
//
// This library is free software. Distribution and use rights are outlined in
// the file "COPYING" which should have been included with this file. If this
// file is missing or damaged, see the license at:
//
// http://www.fltk.org/COPYING.php
//
// Please report all bugs and problems on the following page:
//
// http://www.fltk.org/str.php
//
#include "../../config_lib.h"
#include "Fl_WinAPI_Window_Driver.H"
#include <windows.h>
Fl_Window_Driver *Fl_Window_Driver::newWindowDriver(Fl_Window *w)
{
return new Fl_WinAPI_Window_Driver(w);
}
Fl_WinAPI_Window_Driver::Fl_WinAPI_Window_Driver(Fl_Window *win)
: Fl_Window_Driver(win)
{
icon_ = new Fl_Window_Driver::icon_data;
memset(icon_, 0, sizeof(Fl_Window_Driver::icon_data));
}
Fl_WinAPI_Window_Driver::~Fl_WinAPI_Window_Driver()
{
if (shape_data_) {
delete shape_data_->todelete_;
delete shape_data_;
}
}
void Fl_WinAPI_Window_Driver::shape_bitmap_(Fl_Image* b) {
shape_data_->shape_ = b;
}
void Fl_WinAPI_Window_Driver::shape_alpha_(Fl_Image* img, int offset) {
int i, j, d = img->d(), w = img->w(), h = img->h(), bytesperrow = (w+7)/8;
unsigned u;
uchar byte, onebit;
// build an Fl_Bitmap covering the non-fully transparent/black part of the image
const uchar* bits = new uchar[h*bytesperrow]; // to store the bitmap
const uchar* alpha = (const uchar*)*img->data() + offset; // points to alpha value of rgba pixels
for (i = 0; i < h; i++) {
uchar *p = (uchar*)bits + i * bytesperrow;
byte = 0;
onebit = 1;
for (j = 0; j < w; j++) {
if (d == 3) {
u = *alpha;
u += *(alpha+1);
u += *(alpha+2);
}
else u = *alpha;
if (u > 0) { // if the pixel is not fully transparent/black
byte |= onebit; // turn on the corresponding bit of the bitmap
}
onebit = onebit << 1; // move the single set bit one position to the left
if (onebit == 0 || j == w-1) {
onebit = 1;
*p++ = byte; // store in bitmap one pack of bits
byte = 0;
}
alpha += d; // point to alpha value of next pixel
}
}
Fl_Bitmap* bitmap = new Fl_Bitmap(bits, w, h);
bitmap->alloc_array = 1;
shape_bitmap_(bitmap);
shape_data_->todelete_ = bitmap;
}
void Fl_WinAPI_Window_Driver::shape(const Fl_Image* img) {
if (shape_data_) {
if (shape_data_->todelete_) { delete shape_data_->todelete_; }
}
else {
shape_data_ = new shape_data_type;
}
memset(shape_data_, 0, sizeof(shape_data_type));
pWindow->border(false);
int d = img->d();
if (d && img->count() >= 2) shape_pixmap_((Fl_Image*)img);
else if (d == 0) shape_bitmap_((Fl_Image*)img);
else if (d == 2 || d == 4) shape_alpha_((Fl_Image*)img, d - 1);
else if ((d == 1 || d == 3) && img->count() == 1) shape_alpha_((Fl_Image*)img, 0);
}
static inline BYTE bit(int x) { return (BYTE)(1 << (x%8)); }
static HRGN bitmap2region(Fl_Image* image) {
HRGN hRgn = 0;
/* Does this need to be dynamically determined, perhaps? */
const int ALLOC_UNIT = 100;
DWORD maxRects = ALLOC_UNIT;
RGNDATA* pData = (RGNDATA*)malloc(sizeof(RGNDATAHEADER)+(sizeof(RECT)*maxRects));
pData->rdh.dwSize = sizeof(RGNDATAHEADER);
pData->rdh.iType = RDH_RECTANGLES;
pData->rdh.nCount = pData->rdh.nRgnSize = 0;
SetRect(&pData->rdh.rcBound, MAXLONG, MAXLONG, 0, 0);
const int bytesPerLine = (image->w() + 7)/8;
BYTE* p, *data = (BYTE*)*image->data();
for (int y = 0; y < image->h(); y++) {
// each row, left to right
for (int x = 0; x < image->w(); x++) {
int x0 = x;
while (x < image->w()) {
p = data + x / 8;
if (!((*p) & bit(x))) break; // transparent pixel
x++;
}
if (x > x0) {
RECT *pr;
/* Add the pixels (x0, y) to (x, y+1) as a new rectangle
* in the region
*/
if (pData->rdh.nCount >= maxRects) {
maxRects += ALLOC_UNIT;
pData = (RGNDATA*)realloc(pData, sizeof(RGNDATAHEADER)
+ (sizeof(RECT)*maxRects));
}
pr = (RECT*)&pData->Buffer;
SetRect(&pr[pData->rdh.nCount], x0, y, x, y+1);
if (x0 < pData->rdh.rcBound.left)
pData->rdh.rcBound.left = x0;
if (y < pData->rdh.rcBound.top)
pData->rdh.rcBound.top = y;
if (x > pData->rdh.rcBound.right)
pData->rdh.rcBound.right = x;
if (y+1 > pData->rdh.rcBound.bottom)
pData->rdh.rcBound.bottom = y+1;
pData->rdh.nCount++;
/* On Windows98, ExtCreateRegion() may fail if the
* number of rectangles is too large (ie: >
* 4000). Therefore, we have to create the region by
* multiple steps.
*/
if (pData->rdh.nCount == 2000) {
HRGN h = ExtCreateRegion(NULL, sizeof(RGNDATAHEADER)
+ (sizeof(RECT)*maxRects), pData);
if (hRgn) {
CombineRgn(hRgn, hRgn, h, RGN_OR);
DeleteObject(h);
} else
hRgn = h;
pData->rdh.nCount = 0;
SetRect(&pData->rdh.rcBound, MAXLONG, MAXLONG, 0, 0);
}
}
}
/* Go to next row */
data += bytesPerLine;
}
/* Create or extend the region with the remaining rectangles*/
HRGN h = ExtCreateRegion(NULL, sizeof(RGNDATAHEADER)
+ (sizeof(RECT)*maxRects), pData);
if (hRgn) {
CombineRgn(hRgn, hRgn, h, RGN_OR);
DeleteObject(h);
} else hRgn = h;
free(pData); // I've created the region so I can free this now, right?
return hRgn;
}
void Fl_WinAPI_Window_Driver::draw() {
if (shape_data_) {
if ((shape_data_->lw_ != pWindow->w() || shape_data_->lh_ != pWindow->h()) && shape_data_->shape_) {
// size of window has changed since last time
shape_data_->lw_ = pWindow->w();
shape_data_->lh_ = pWindow->h();
Fl_Image* temp = shape_data_->shape_->copy(shape_data_->lw_, shape_data_->lh_);
HRGN region = bitmap2region(temp);
SetWindowRgn(fl_xid(pWindow), region, TRUE); // the system deletes the region when it's no longer needed
delete temp;
}
} Fl_Window_Driver::draw();
}
void Fl_WinAPI_Window_Driver::icons(const Fl_RGB_Image *icons[], int count) {
free_icons();
if (count > 0) {
icon_->icons = new Fl_RGB_Image*[count];
icon_->count = count;
// FIXME: Fl_RGB_Image lacks const modifiers on methods
for (int i = 0;i < count;i++)
icon_->icons[i] = (Fl_RGB_Image*)((Fl_RGB_Image*)icons[i])->copy();
}
if (Fl_X::i(pWindow))
Fl_X::i(pWindow)->set_icons();
}
const void *Fl_WinAPI_Window_Driver::icon() const {
return icon_->legacy_icon;
}
void Fl_WinAPI_Window_Driver::icon(const void * ic) {
free_icons();
icon_->legacy_icon = ic;
}
void Fl_WinAPI_Window_Driver::free_icons() {
int i;
icon_->legacy_icon = 0L;
if (icon_->icons) {
for (i = 0;i < icon_->count;i++)
delete icon_->icons[i];
delete [] icon_->icons;
icon_->icons = 0L;
}
icon_->count = 0;
if (icon_->big_icon)
DestroyIcon(icon_->big_icon);
if (icon_->small_icon)
DestroyIcon(icon_->small_icon);
icon_->big_icon = NULL;
icon_->small_icon = NULL;
}
void Fl_WinAPI_Window_Driver::icons(HICON big_icon, HICON small_icon)
{
free_icons();
if (big_icon != NULL)
icon_->big_icon = CopyIcon(big_icon);
if (small_icon != NULL)
icon_->small_icon = CopyIcon(small_icon);
if (Fl_X::i(pWindow))
Fl_X::i(pWindow)->set_icons();
}
//
// End of "$Id$".
//
|
