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clipboard: include mime types in SDL_ClipboarUpdate

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This patch modifies the clipboard handling so that when we receive an external
clipboard update, the suppported mime types are included in the SDL_ClipboarUpdate
event. The patch also introduces the owner field that allows to know if the update
is because we own the clipboard (internal update) or if it was an external update.
This commit is contained in:
David Fort
2024-10-02 21:19:42 +02:00
committed by Sam Lantinga
parent 2880b40e33
commit e00b1fdd67
18 changed files with 256 additions and 66 deletions
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68
src/video/windows/SDL_windowsclipboard.c
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@@ -25,6 +25,7 @@
#include "SDL_windowsvideo.h"
#include "SDL_windowswindow.h"
#include "../SDL_clipboard_c.h"
#include "../../events/SDL_events_c.h"
#include "../../events/SDL_clipboardevents_c.h"
#ifdef UNICODE
@@ -329,14 +330,73 @@ bool WIN_HasClipboardData(SDL_VideoDevice *_this, const char *mime_type)
return false;
}
static char **GetMimeTypes(int *pnformats)
{
*pnformats = 0;
int nformats = CountClipboardFormats();
size_t allocSize = (nformats + 1) * sizeof(char*);
UINT format = 0;
int formatsSz = 0;
int i;
for (i = 0; i < nformats; i++) {
format = EnumClipboardFormats(format);
if (!format) {
nformats = i;
break;
}
char mimeType[200];
int nchars = GetClipboardFormatNameA(format, mimeType, sizeof(mimeType));
formatsSz += nchars + 1;
}
char **new_mime_types = SDL_AllocateTemporaryMemory(allocSize + formatsSz);
if (!new_mime_types)
return NULL;
format = 0;
char *strPtr = (char *)(new_mime_types + nformats + 1);
int formatRemains = formatsSz;
for (i = 0; i < nformats; i++) {
format = EnumClipboardFormats(format);
if (!format) {
nformats = i;
break;
}
new_mime_types[i] = strPtr;
int nchars = GetClipboardFormatNameA(format, strPtr, formatRemains-1);
strPtr += nchars;
*strPtr = '\0';
strPtr++;
formatRemains -= (nchars + 1);
}
new_mime_types[nformats] = NULL;
*pnformats = nformats;
return new_mime_types;
}
void WIN_CheckClipboardUpdate(struct SDL_VideoData *data)
{
const DWORD count = GetClipboardSequenceNumber();
if (count != data->clipboard_count) {
const DWORD seq = GetClipboardSequenceNumber();
if (seq != data->clipboard_count) {
if (data->clipboard_count) {
SDL_SendClipboardUpdate();
int nformats = 0;
char **new_mime_types = GetMimeTypes(&nformats);
if (new_mime_types) {
SDL_SendClipboardUpdate(false, new_mime_types, nformats);
} else {
WIN_SetError("Couldn't get clipboard mime types");
}
}
data->clipboard_count = count;
data->clipboard_count = seq;
}
}