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X11: Implement extended drag & drop API

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Florian Albrechtskirchinger 2022-06-10 13:30:12 +02:00
parent 2933c00e54
commit 0a757737d3
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GPG Key ID: 19618CE9B2D4BE6D
3 changed files with 165 additions and 27 deletions
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21
src/x11_init.c
View File

@ -910,11 +910,6 @@ static GLFWbool initExtensions(void)
// the keyboard mapping.
createKeyTables();
// String format atoms
_glfw.x11.NULL_ = XInternAtom(_glfw.x11.display, "NULL", False);
_glfw.x11.UTF8_STRING = XInternAtom(_glfw.x11.display, "UTF8_STRING", False);
_glfw.x11.ATOM_PAIR = XInternAtom(_glfw.x11.display, "ATOM_PAIR", False);
// Custom selection property atom
_glfw.x11.GLFW_SELECTION =
XInternAtom(_glfw.x11.display, "GLFW_SELECTION", False);
@ -925,6 +920,7 @@ static GLFWbool initExtensions(void)
_glfw.x11.PRIMARY = XInternAtom(_glfw.x11.display, "PRIMARY", False);
_glfw.x11.INCR = XInternAtom(_glfw.x11.display, "INCR", False);
_glfw.x11.CLIPBOARD = XInternAtom(_glfw.x11.display, "CLIPBOARD", False);
_glfw.x11.ATOM_PAIR = XInternAtom(_glfw.x11.display, "ATOM_PAIR", False);
// Clipboard manager atoms
_glfw.x11.CLIPBOARD_MANAGER =
@ -937,11 +933,24 @@ static GLFWbool initExtensions(void)
_glfw.x11.XdndEnter = XInternAtom(_glfw.x11.display, "XdndEnter", False);
_glfw.x11.XdndPosition = XInternAtom(_glfw.x11.display, "XdndPosition", False);
_glfw.x11.XdndStatus = XInternAtom(_glfw.x11.display, "XdndStatus", False);
_glfw.x11.XdndActionCopy = XInternAtom(_glfw.x11.display, "XdndActionCopy", False);
_glfw.x11.XdndLeave = XInternAtom(_glfw.x11.display, "XdndLeave", False);
_glfw.x11.XdndActions[_GLFW_DND_COPY_INDEX] =
XInternAtom(_glfw.x11.display, "XdndActionCopy", False);
_glfw.x11.XdndActions[_GLFW_DND_LINK_INDEX] =
XInternAtom(_glfw.x11.display, "XdndActionLink", False);
_glfw.x11.XdndActions[_GLFW_DND_MOVE_INDEX] =
XInternAtom(_glfw.x11.display, "XdndActionMove", False);
_glfw.x11.XdndDrop = XInternAtom(_glfw.x11.display, "XdndDrop", False);
_glfw.x11.XdndFinished = XInternAtom(_glfw.x11.display, "XdndFinished", False);
_glfw.x11.XdndSelection = XInternAtom(_glfw.x11.display, "XdndSelection", False);
_glfw.x11.XdndTypeList = XInternAtom(_glfw.x11.display, "XdndTypeList", False);
// Format atoms (shared by Xdnd and selection)
_glfw.x11.NULL_ = XInternAtom(_glfw.x11.display, "NULL", False);
_glfw.x11.UTF8_STRING = XInternAtom(_glfw.x11.display, "UTF8_STRING", False);
_glfw.x11.STRING = XInternAtom(_glfw.x11.display, "STRING", False);
_glfw.x11.TEXT = XInternAtom(_glfw.x11.display, "TEXT", False);
_glfw.x11.text_plain = XInternAtom(_glfw.x11.display, "text/plain", False);
_glfw.x11.text_uri_list = XInternAtom(_glfw.x11.display, "text/uri-list", False);
// ICCCM, EWMH and Motif window property atoms

25
src/x11_platform.h
View File

@ -97,6 +97,9 @@ typedef struct __GLXFBConfig* GLXFBConfig;
typedef struct __GLXcontext* GLXContext;
typedef void (*__GLXextproc)(void);
// TODO for dev; remove
typedef char* (* PFN_XGetAtomName)(Display*,Atom);
typedef XClassHint* (* PFN_XAllocClassHint)(void);
typedef XSizeHints* (* PFN_XAllocSizeHints)(void);
typedef XWMHints* (* PFN_XAllocWMHints)(void);
@ -622,12 +625,12 @@ typedef struct _GLFWlibraryX11
Atom XdndEnter;
Atom XdndPosition;
Atom XdndStatus;
Atom XdndActionCopy;
Atom XdndLeave;
Atom XdndActions[_GLFW_DND_ACTION_COUNT];
Atom XdndDrop;
Atom XdndFinished;
Atom XdndSelection;
Atom XdndTypeList;
Atom text_uri_list;
// Selection (clipboard) atoms
Atom TARGETS;
@ -637,12 +640,17 @@ typedef struct _GLFWlibraryX11
Atom PRIMARY;
Atom CLIPBOARD_MANAGER;
Atom SAVE_TARGETS;
Atom NULL_;
Atom UTF8_STRING;
Atom COMPOUND_STRING;
Atom ATOM_PAIR;
Atom GLFW_SELECTION;
// Format atoms (shared by Xdnd and Selection)
Atom NULL_;
Atom UTF8_STRING;
Atom STRING;
Atom TEXT;
Atom text_plain;
Atom text_uri_list;
struct {
void* handle;
GLFWbool utf8;
@ -800,7 +808,12 @@ typedef struct _GLFWlibraryX11
struct {
int version;
Window source;
Atom format;
Atom formatAtoms[_GLFW_DND_FORMAT_COUNT];
int availableFormats;
int chosenFormat;
int availableActions;
int proposedAction;
int chosenAction;
} xdnd;
struct {

138
src/x11_window.c
View File

@ -1519,15 +1519,22 @@ static void processEvent(XEvent *event)
// A drag operation has entered the window
unsigned long count;
Atom* formats = NULL;
double xpos, ypos;
const GLFWbool list = event->xclient.data.l[1] & 1;
memset(&_glfw.x11.xdnd, 0, sizeof(_glfw.x11.xdnd));
_glfw.x11.xdnd.source = event->xclient.data.l[0];
_glfw.x11.xdnd.version = event->xclient.data.l[1] >> 24;
_glfw.x11.xdnd.format = None;
if (_glfw.x11.xdnd.version > _GLFW_XDND_VERSION)
return;
// Xdnd doesn't support the concepts "available actions" and
// "proposed action"; default to all and copy
_glfw.x11.xdnd.availableActions =
GLFW_DND_COPY | GLFW_DND_LINK | GLFW_DND_MOVE;
_glfw.x11.xdnd.proposedAction = GLFW_DND_COPY;
if (list)
{
count = _glfwGetWindowPropertyX11(_glfw.x11.xdnd.source,
@ -1541,27 +1548,75 @@ static void processEvent(XEvent *event)
formats = (Atom*) event->xclient.data.l + 2;
}
// TODO remove
PFN_XGetAtomName GetAtomName = (PFN_XGetAtomName)
_glfwPlatformGetModuleSymbol(_glfw.x11.xlib.handle, "XGetAtomName");
for (unsigned int i = 0; i < count; i++)
{
if (formats[i] == _glfw.x11.text_uri_list)
printf("format (%d): %s\n", i, GetAtomName(_glfw.x11.display, formats[i]));
if (!_glfw.x11.xdnd.formatAtoms[_GLFW_DND_PATHS_INDEX]
&& formats[i] == _glfw.x11.text_uri_list)
{
_glfw.x11.xdnd.format = _glfw.x11.text_uri_list;
break;
_glfw.x11.xdnd.formatAtoms[_GLFW_DND_PATHS_INDEX] = formats[i];
_glfw.x11.xdnd.availableFormats |= GLFW_DND_PATHS;
}
else if (!_glfw.x11.xdnd.formatAtoms[_GLFW_DND_TEXT_INDEX]
&& (formats[i] == _glfw.x11.text_plain
|| formats[i] == _glfw.x11.UTF8_STRING
|| formats[i] == _glfw.x11.STRING
|| formats[i] == _glfw.x11.TEXT))
{
_glfw.x11.xdnd.formatAtoms[_GLFW_DND_TEXT_INDEX] = formats[i];
_glfw.x11.xdnd.availableFormats |= GLFW_DND_TEXT;
}
}
if (list && formats)
XFree(formats);
window->dndDragging = GLFW_TRUE;
_glfwGetCursorPosX11(window, &xpos, &ypos);
_glfw.x11.xdnd.chosenFormat = _glfw.x11.xdnd.availableFormats;
_glfw.x11.xdnd.chosenAction = _glfw.x11.xdnd.proposedAction;
_glfwInputDrag(window, GLFW_DND_ENTER, xpos, ypos,
_glfw.x11.xdnd.availableFormats,
&_glfw.x11.xdnd.chosenFormat,
_glfw.x11.xdnd.availableActions,
&_glfw.x11.xdnd.chosenAction);
}
else if (event->xclient.message_type == _glfw.x11.XdndLeave)
{
// A drag operation has left the window or was canceled
window->dndDragging = GLFW_FALSE;
_glfw.x11.xdnd.chosenFormat =
_glfw.x11.xdnd.availableFormats = GLFW_DND_NONE;
_glfw.x11.xdnd.chosenAction =
_glfw.x11.xdnd.proposedAction =
_glfw.x11.xdnd.availableActions = GLFW_DND_NONE;
_glfwInputDrag(window, GLFW_DND_LEAVE, 0.0, 0.0,
_glfw.x11.xdnd.availableFormats,
&_glfw.x11.xdnd.chosenFormat,
_glfw.x11.xdnd.availableActions,
&_glfw.x11.xdnd.chosenAction);
}
else if (event->xclient.message_type == _glfw.x11.XdndDrop)
{
// The drag operation has finished by dropping on the window
Time time = CurrentTime;
int formatIndex = _glfw_ffs(_glfw.x11.xdnd.chosenFormat
& _GLFW_DND_MASK) - 1;
window->dndDragging = GLFW_FALSE;
if (_glfw.x11.xdnd.version > _GLFW_XDND_VERSION)
return;
if (_glfw.x11.xdnd.format)
if (_glfw.x11.xdnd.chosenAction
&& formatIndex >= 0 && formatIndex < _GLFW_DND_FORMAT_COUNT
&& _glfw.x11.xdnd.formatAtoms[formatIndex])
{
if (_glfw.x11.xdnd.version >= 1)
time = event->xclient.data.l[2];
@ -1569,7 +1624,7 @@ static void processEvent(XEvent *event)
// Request the chosen format from the source window
XConvertSelection(_glfw.x11.display,
_glfw.x11.XdndSelection,
_glfw.x11.xdnd.format,
_glfw.x11.xdnd.formatAtoms[formatIndex],
_glfw.x11.XdndSelection,
window->x11.handle,
time);
@ -1594,12 +1649,29 @@ static void processEvent(XEvent *event)
// The drag operation has moved over the window
const int xabs = (event->xclient.data.l[2] >> 16) & 0xffff;
const int yabs = (event->xclient.data.l[2]) & 0xffff;
const Atom action = event->xclient.data.l[4];
Window dummy;
int xpos, ypos;
if (_glfw.x11.xdnd.version > _GLFW_XDND_VERSION)
return;
if (_glfw.x11.xdnd.version >= 2)
{
_glfw.x11.xdnd.proposedAction = GLFW_DND_NONE;
for(int i = 0; i < _GLFW_DND_ACTION_COUNT; ++i)
{
if(action == _glfw.x11.XdndActions[i])
{
_glfw.x11.xdnd.proposedAction =
(GLFW_DND_COPY & ~_GLFW_DND_MASK) | (1 << i);
break;
}
}
}
else
_glfw.x11.xdnd.proposedAction = GLFW_DND_COPY;
XTranslateCoordinates(_glfw.x11.display,
_glfw.x11.root,
window->x11.handle,
@ -1609,6 +1681,13 @@ static void processEvent(XEvent *event)
_glfwInputCursorPos(window, xpos, ypos);
_glfw.x11.xdnd.chosenAction = _glfw.x11.xdnd.proposedAction;
_glfwInputDrag(window, GLFW_DND_DRAG, xpos, ypos,
_glfw.x11.xdnd.availableFormats,
&_glfw.x11.xdnd.chosenFormat,
_glfw.x11.xdnd.availableActions,
&_glfw.x11.xdnd.chosenAction);
XEvent reply = { ClientMessage };
reply.xclient.window = _glfw.x11.xdnd.source;
reply.xclient.message_type = _glfw.x11.XdndStatus;
@ -1617,12 +1696,19 @@ static void processEvent(XEvent *event)
reply.xclient.data.l[2] = 0; // Specify an empty rectangle
reply.xclient.data.l[3] = 0;
if (_glfw.x11.xdnd.format)
if (_glfw.x11.xdnd.chosenAction)
{
// Reply that we are ready to copy the dragged data
reply.xclient.data.l[1] = 1; // Accept with no rectangle
if (_glfw.x11.xdnd.version >= 2)
reply.xclient.data.l[4] = _glfw.x11.XdndActionCopy;
{
int actionIndex = _glfw_ffs(_glfw.x11.xdnd.chosenAction
& _GLFW_DND_MASK) - 1;
if(actionIndex >= 0 && actionIndex < _GLFW_DND_ACTION_COUNT)
{
reply.xclient.data.l[4] = _glfw.x11.XdndActions[actionIndex];
}
}
}
XSendEvent(_glfw.x11.display, _glfw.x11.xdnd.source,
@ -1646,15 +1732,39 @@ static void processEvent(XEvent *event)
(unsigned char**) &data);
if (result)
{
int formatIndex = _glfw_ffs(_glfw.x11.xdnd.chosenFormat
& _GLFW_DND_MASK) - 1;
if(formatIndex >= 0 && formatIndex < _GLFW_DND_FORMAT_COUNT)
{
int format = (GLFW_DND_TEXT & ~_GLFW_DND_MASK) | (1 << formatIndex);
switch (format)
{
case GLFW_DND_PATHS:
{
int count;
char** paths = _glfwParseUriList(data, &count);
_glfwInputDrop(window, count, (const char**) paths);
_glfwInputDrop(window, count, (const char **) paths);
for (int i = 0; i < count; i++)
_glfwInputDropEx(window, format, count, paths,
&_glfw.x11.xdnd.chosenAction);
for (int i = 0; i < count; ++i)
_glfw_free(paths[i]);
_glfw_free(paths);
break;
}
case GLFW_DND_TEXT:
{
_glfwInputDropEx(window, format, -1, data,
&_glfw.x11.xdnd.chosenAction);
break;
}
default:
break;
}
}
}
if (data)
@ -1668,7 +1778,13 @@ static void processEvent(XEvent *event)
reply.xclient.format = 32;
reply.xclient.data.l[0] = window->x11.handle;
reply.xclient.data.l[1] = result;
reply.xclient.data.l[2] = _glfw.x11.XdndActionCopy;
int actionIndex = _glfw_ffs(_glfw.x11.xdnd.chosenAction
& _GLFW_DND_MASK) - 1;
if(actionIndex >= 0 && actionIndex < _GLFW_DND_ACTION_COUNT)
{
reply.xclient.data.l[2] = _glfw.x11.XdndActions[actionIndex];
}
XSendEvent(_glfw.x11.display, _glfw.x11.xdnd.source,
False, NoEventMask, &reply);