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SDL_windowsclipboard.c
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/*
SDL - Simple DirectMedia Layer
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Copyright (C) 1997-2011 Sam Lantinga
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This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
Sam Lantinga
slouken@libsdl.org
*/
#include "SDL_config.h"
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#include "SDL_windowsvideo.h"
#include "SDL_windowswindow.h"
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#include "../../events/SDL_clipboardevents_c.h"
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#ifdef UNICODE
#define TEXT_FORMAT CF_UNICODETEXT
#else
#define TEXT_FORMAT CF_TEXT
#endif
/* Get any application owned window handle for clipboard association */
static HWND
GetWindowHandle(_THIS)
{
SDL_Window *window;
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window = _this->windows;
if (window) {
return ((SDL_WindowData *) window->driverdata)->hwnd;
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}
return NULL;
}
int
WIN_SetClipboardText(_THIS, const char *text)
{
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SDL_VideoData *data = (SDL_VideoData *) _this->driverdata;
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int result = 0;
if (OpenClipboard(GetWindowHandle(_this))) {
HANDLE hMem;
LPTSTR tstr;
SIZE_T i, size;
/* Convert the text from UTF-8 to Windows Unicode */
tstr = WIN_UTF8ToString(text);
if (!tstr) {
return -1;
}
/* Find out the size of the data */
for (size = 0, i = 0; tstr[i]; ++i, ++size) {
if (tstr[i] == '\n' && (i == 0 || tstr[i-1] != '\r')) {
/* We're going to insert a carriage return */
++size;
}
}
size = (size+1)*sizeof(*tstr);
/* Save the data to the clipboard */
hMem = GlobalAlloc(GMEM_MOVEABLE, size);
if (hMem) {
LPTSTR dst = (LPTSTR)GlobalLock(hMem);
/* Copy the text over, adding carriage returns as necessary */
for (i = 0; tstr[i]; ++i) {
if (tstr[i] == '\n' && (i == 0 || tstr[i-1] != '\r')) {
*dst++ = '\r';
}
*dst++ = tstr[i];
}
*dst = 0;
GlobalUnlock(hMem);
EmptyClipboard();
if (!SetClipboardData(TEXT_FORMAT, hMem)) {
WIN_SetError("Couldn't set clipboard data");
result = -1;
}
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#ifdef _WIN32_WCE
data->clipboard_count = 0;
#else
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data->clipboard_count = GetClipboardSequenceNumber();
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#endif
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}
SDL_free(tstr);
CloseClipboard();
} else {
WIN_SetError("Couldn't open clipboard");
result = -1;
}
return result;
}
char *
WIN_GetClipboardText(_THIS)
{
char *text;
text = NULL;
if (IsClipboardFormatAvailable(TEXT_FORMAT) &&
OpenClipboard(GetWindowHandle(_this))) {
HANDLE hMem;
LPTSTR tstr;
hMem = GetClipboardData(TEXT_FORMAT);
if (hMem) {
tstr = (LPTSTR)GlobalLock(hMem);
text = WIN_StringToUTF8(tstr);
GlobalUnlock(hMem);
} else {
WIN_SetError("Couldn't get clipboard data");
}
CloseClipboard();
}
if (!text) {
text = SDL_strdup("");
}
return text;
}
SDL_bool
WIN_HasClipboardText(_THIS)
{
if (IsClipboardFormatAvailable(TEXT_FORMAT)) {
return SDL_TRUE;
} else {
return SDL_FALSE;
}
}
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void
WIN_CheckClipboardUpdate(struct SDL_VideoData * data)
{
DWORD count;
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#ifdef _WIN32_WCE
count = 0;
#else
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count = GetClipboardSequenceNumber();
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#endif
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if (count != data->clipboard_count) {
if (data->clipboard_count) {
SDL_SendClipboardUpdate();
}
data->clipboard_count = count;
}
}
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/* vi: set ts=4 sw=4 expandtab: */