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