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
|
//
// "$Id$"
//
// Clipboard display test application for the Fast Light Tool Kit (FLTK).
//
// Copyright 1998-2014 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 <FL/Fl_Window.H>
#include <FL/Fl_Box.H>
#include <FL/Fl_Image.H>
#include <FL/Fl_Shared_Image.H>
#include <FL/Fl_Text_Buffer.H>
#include <FL/Fl_Text_Display.H>
#include <FL/Fl_Tabs.H>
#include <FL/Fl_Button.H>
#include <FL/Fl.H>
#include <FL/fl_draw.H>
#ifdef _WIN32
#include <windows.h>
#endif // _WIN32
/* Displays and follows the content of the clipboard with either image or text data
*/
Fl_Box *image_box;
Fl_Box *image_size;
Fl_Text_Display *display;
inline int fl_min(int a, int b) { return (a < b ? a : b); }
class chess : public Fl_Box { // a box with a chess-like pattern below its image
public:
chess(int x, int y, int w, int h) : Fl_Box(FL_FLAT_BOX,x,y,w,h,0) {
align(FL_ALIGN_CENTER | FL_ALIGN_CLIP);
}
void draw() {
draw_box();
Fl_Image *im = image();
if (im) { // draw the chess pattern below the box centered image
int X = x() + (w()-im->w())/2, Y = y() + (h()-im->h())/2, W = im->w(), H = im->h();
fl_push_clip(X,Y,W,H);
fl_push_clip(x(),y(),w(),h());
fl_color(FL_WHITE); fl_rectf(X,Y,W,H);
fl_color(FL_LIGHT2);
const int side = 4, side2 = 2*side;
for (int j=Y; j<Y+H; j+=side) {
for (int i=X + (j-Y)%side2; i<X+W; i+=side2) {
fl_rectf(i,j,side,side);
}
}
fl_pop_clip();
fl_pop_clip();
}
draw_label(); // draw the box image
}
} *chess_obj;
#define TAB_COLOR FL_DARK3
class clipboard_viewer : public Fl_Tabs { // use tabs to display as appropriate the image or textual content of the clipboard
public:
clipboard_viewer(int x, int y, int w, int h) : Fl_Tabs(x,y,w,h) {};
virtual int handle(int event) {
if (event != FL_PASTE) return Fl_Tabs::handle(event);
if (strcmp(Fl::event_clipboard_type(), Fl::clipboard_image) == 0) { // an image is being pasted
Fl_RGB_Image *im = (Fl_RGB_Image*)Fl::event_clipboard(); // get it as an Fl_RGB_Image object
if (!im) return 1;
char title[300];
sprintf(title, "%dx%d",im->w(), im->h()); // display the image original size
#ifdef _WIN32
OpenClipboard(NULL); // display extra technical info about clipboard content
char *p=title + strlen(title);
int format = EnumClipboardFormats(0);
if (format && format < CF_MAX) { sprintf(p, " %d",format); p += strlen(p); }
while (format) {
format = EnumClipboardFormats(format);
if (format && format < CF_MAX) { sprintf(p, " %d",format); p += strlen(p); }
}
HANDLE h;
if ((h = GetClipboardData(CF_DIB))) {
LPBITMAPINFO lpBI = (LPBITMAPINFO)GlobalLock(h);
sprintf(p, " biBitCount=%d biCompression=%d biClrUsed=%d",
lpBI->bmiHeader.biBitCount, (int)lpBI->bmiHeader.biCompression, (int)lpBI->bmiHeader.biClrUsed);
}
CloseClipboard();
#endif
Fl_Image *oldimg = image_box->image();
delete oldimg;
if (im->w() > image_box->w() || im->h() > image_box->h()) im->scale(image_box->w(), image_box->h());
image_box->image(im); // show the scaled image
image_size->copy_label(title);
value(image_box->parent());
window()->redraw();
}
else { // text is being pasted
display->buffer()->text(Fl::event_text());
value(display);
display->redraw();
}
return 1;
}
} *tabs;
void cb(Fl_Widget *wid, clipboard_viewer *tabs)
{
if (Fl::clipboard_contains(Fl::clipboard_image)) {
Fl::paste(*tabs, 1, Fl::clipboard_image); // try to find image in the clipboard
return;
}
if (Fl::clipboard_contains(Fl::clipboard_plain_text)) Fl::paste(*tabs, 1, Fl::clipboard_plain_text); // also try to find text
}
void clip_callback(int source, void *data) { // called after clipboard was changed or at application activation
if ( source == 1 ) cb(NULL, (clipboard_viewer *)data);
}
int main(int argc, char **argv)
{
fl_register_images(); // required for the X11 platform to allow pasting of images
Fl_Window* win = new Fl_Window(500, 550, "clipboard viewer");
tabs = new clipboard_viewer(0, 0, 500, 500);
Fl_Group *g = new Fl_Group( 5, 30, 490, 460, Fl::clipboard_image); // g will display the image form
g->box(FL_FLAT_BOX);
image_box = new chess(5, 30, 490, 450);
image_size = new Fl_Box(FL_NO_BOX, 5, 485, 490, 10, 0);
g->end();
g->selection_color(TAB_COLOR);
Fl_Text_Buffer *buffer = new Fl_Text_Buffer();
display = new Fl_Text_Display(5,30,490, 460, Fl::clipboard_plain_text); // display will display the text form
display->buffer(buffer);
display->selection_color(TAB_COLOR);
tabs->end();
tabs->resizable(display);
Fl_Group *g2 = new Fl_Group( 10,510,200,25);
Fl_Button *refresh = new Fl_Button(10,510,200,25, "Refresh from clipboard");
refresh->callback((Fl_Callback*)cb, tabs);
g2->end();
g2->resizable(NULL);
win->end();
win->resizable(tabs);
win->show(argc,argv);
clip_callback(1, tabs); // use clipboard content at start
Fl::add_clipboard_notify(clip_callback, tabs); // will update with new clipboard content immediately or at application activation
Fl_Image::RGB_scaling(FL_RGB_SCALING_BILINEAR); // set bilinear image scaling method
return Fl::run();
}
//
// End of "$Id$".
//
|
