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comparison src/video/win32/SDL_win32clipboard.c @ 4500:eff4e88cc1e8

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Added Windows clipboard support
author Sam Lantinga <slouken@libsdl.org>
date Thu, 08 Jul 2010 05:43:34 -0700
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children 9faebccfefb3
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4499:c2ebe3e020c6 4500:eff4e88cc1e8
1 /*
2 SDL - Simple DirectMedia Layer
3 Copyright (C) 1997-2010 Sam Lantinga
4
5 This library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
9
10 This library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public
16 License along with this library; if not, write to the Free Software
17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
18
19 Sam Lantinga
20 slouken@libsdl.org
21 */
22 #include "SDL_config.h"
23
24 #include "SDL_win32video.h"
25 #include "SDL_win32window.h"
26
27
28 #ifdef UNICODE
29 #define TEXT_FORMAT CF_UNICODETEXT
30 #else
31 #define TEXT_FORMAT CF_TEXT
32 #endif
33
34
35 /* Get any application owned window handle for clipboard association */
36 static HWND
37 GetWindowHandle(_THIS)
38 {
39 SDL_VideoDisplay *display;
40 SDL_Window *window;
41
42 display = _this->displays;
43 if (display) {
44 window = display->windows;
45 if (window) {
46 return ((SDL_WindowData *) window->driverdata)->hwnd;
47 }
48 }
49 return NULL;
50 }
51
52 int
53 WIN_SetClipboardText(_THIS, const char *text)
54 {
55 int result = 0;
56
57 if (OpenClipboard(GetWindowHandle(_this))) {
58 HANDLE hMem;
59 LPTSTR tstr;
60 SIZE_T i, size;
61
62 /* Convert the text from UTF-8 to Windows Unicode */
63 tstr = WIN_UTF8ToString(text);
64 if (!tstr) {
65 return -1;
66 }
67
68 /* Find out the size of the data */
69 for (size = 0, i = 0; tstr[i]; ++i, ++size) {
70 if (tstr[i] == '\n' && (i == 0 || tstr[i-1] != '\r')) {
71 /* We're going to insert a carriage return */
72 ++size;
73 }
74 }
75 size = (size+1)*sizeof(*tstr);
76
77 /* Save the data to the clipboard */
78 hMem = GlobalAlloc(GMEM_MOVEABLE, size);
79 if (hMem) {
80 LPTSTR dst = (LPTSTR)GlobalLock(hMem);
81 /* Copy the text over, adding carriage returns as necessary */
82 for (i = 0; tstr[i]; ++i) {
83 if (tstr[i] == '\n' && (i == 0 || tstr[i-1] != '\r')) {
84 *dst++ = '\r';
85 }
86 *dst++ = tstr[i];
87 }
88 *dst = 0;
89 GlobalUnlock(hMem);
90
91 EmptyClipboard();
92 if (!SetClipboardData(TEXT_FORMAT, hMem)) {
93 WIN_SetError("Couldn't set clipboard data");
94 result = -1;
95 }
96 }
97 SDL_free(tstr);
98
99 CloseClipboard();
100 } else {
101 WIN_SetError("Couldn't open clipboard");
102 result = -1;
103 }
104 return result;
105 }
106
107 char *
108 WIN_GetClipboardText(_THIS)
109 {
110 char *text;
111
112 text = NULL;
113 if (IsClipboardFormatAvailable(TEXT_FORMAT) &&
114 OpenClipboard(GetWindowHandle(_this))) {
115 HANDLE hMem;
116 LPTSTR tstr;
117
118 hMem = GetClipboardData(TEXT_FORMAT);
119 if (hMem) {
120 tstr = (LPTSTR)GlobalLock(hMem);
121 text = WIN_StringToUTF8(tstr);
122 GlobalUnlock(hMem);
123 } else {
124 WIN_SetError("Couldn't get clipboard data");
125 }
126 CloseClipboard();
127 }
128 if (!text) {
129 text = SDL_strdup("");
130 }
131 return text;
132 }
133
134 SDL_bool
135 WIN_HasClipboardText(_THIS)
136 {
137 if (IsClipboardFormatAvailable(TEXT_FORMAT)) {
138 return SDL_TRUE;
139 } else {
140 return SDL_FALSE;
141 }
142 }
143
144 /* vi: set ts=4 sw=4 expandtab: */