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gtk drop refactored using events.

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This commit is contained in:
Miroslav Šedivý 2021-01-14 19:53:58 +01:00
parent 253247f6ce
commit a96b770052
9 changed files with 248 additions and 200 deletions
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53
internal/desktop/drop.go Normal file
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@ -0,0 +1,53 @@
package desktop
import (
"time"
"demodesk/neko/internal/desktop/drop"
)
const (
DROP_DELAY = 100 * time.Millisecond
)
func (manager *DesktopManagerCtx) DropFiles(x int, y int, files []string) bool {
mu.Lock()
defer mu.Unlock()
drop.Emmiter.Clear()
drop.Emmiter.Once("create", func(payload ...interface{}) {
manager.Move(0, 0)
})
drop.Emmiter.Once("cursor-enter", func(payload ...interface{}) {
manager.ButtonDown(1)
})
drop.Emmiter.Once("button-press", func(payload ...interface{}) {
manager.Move(x, y)
})
drop.Emmiter.Once("begin", func(payload ...interface{}) {
manager.Move(x, y)
time.Sleep(DROP_DELAY)
manager.Move(x, y)
time.Sleep(DROP_DELAY)
manager.ButtonUp(1)
})
finished := make(chan bool)
drop.Emmiter.Once("finish", func(payload ...interface{}) {
finished <- payload[0].(bool)
})
go drop.OpenWindow(files)
select {
case succeeded := <- finished:
return succeeded
case <-time.After(1 * time.Second):
drop.CloseWindow();
return false
}
}

93
internal/desktop/drop/drop.c Normal file
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@ -0,0 +1,93 @@
#include "drop.h"
GtkWidget *drag_widget = NULL;
static void dragDataGet(
GtkWidget *widget,
GdkDragContext *context,
GtkSelectionData *data,
guint target_type,
guint time,
gpointer user_data
) {
gchar **uris = (gchar **) user_data;
if (target_type == DRAG_TARGET_TYPE_URI) {
gtk_selection_data_set_uris(data, uris);
return;
}
if (target_type == DRAG_TARGET_TYPE_TEXT) {
gtk_selection_data_set_text(data, uris[0], -1);
return;
}
}
static void dragEnd(
GtkWidget *widget,
GdkDragContext *context,
gpointer user_data
) {
gboolean succeeded = gdk_drag_drop_succeeded(context);
gtk_widget_destroy(widget);
goDragFinish(succeeded);
drag_widget = NULL;
}
void dragWindowOpen(char **uris) {
if (drag_widget != NULL) dragWindowClose();
gtk_init(NULL, NULL);
GtkWidget *widget = gtk_window_new(GTK_WINDOW_TOPLEVEL);;
GtkWindow *window = GTK_WINDOW(widget);
gtk_window_move(window, 0, 0);
gtk_window_set_title(window, "Neko Drag & Drop Window");
gtk_window_set_decorated(window, FALSE);
gtk_window_set_keep_above(window, TRUE);
gtk_window_set_default_size(window, 100, 100);
GtkTargetList* target_list = gtk_target_list_new(NULL, 0);
gtk_target_list_add_uri_targets(target_list, DRAG_TARGET_TYPE_URI);
gtk_target_list_add_text_targets(target_list, DRAG_TARGET_TYPE_TEXT);
gtk_drag_source_set(widget, GDK_BUTTON1_MASK, NULL, 0, GDK_ACTION_COPY | GDK_ACTION_LINK | GDK_ACTION_ASK);
gtk_drag_source_set_target_list(widget, target_list);
g_signal_connect(widget, "map-event", G_CALLBACK(goDragCreate), NULL);
g_signal_connect(widget, "enter-notify-event", G_CALLBACK(goDragCursorEnter), NULL);
g_signal_connect(widget, "button-press-event", G_CALLBACK(goDragButtonPress), NULL);
g_signal_connect(widget, "drag-begin", G_CALLBACK(goDragBegin), NULL);
g_signal_connect(widget, "drag-data-get", G_CALLBACK(dragDataGet), uris);
g_signal_connect(widget, "drag-end", G_CALLBACK(dragEnd), NULL);
g_signal_connect(window, "destroy", G_CALLBACK(gtk_main_quit), NULL);
gtk_widget_show_all(widget);
drag_widget = widget;
gtk_main();
}
void dragWindowClose() {
gtk_widget_destroy(drag_widget);
drag_widget = NULL;
}
char **dragUrisMake(int size) {
return calloc(size + 1, sizeof(char *));
}
void dragUrisSetFile(char **uris, char *file, int n) {
GFile *gfile = g_file_new_for_path(file);
uris[n] = g_file_get_uri(gfile);
}
void dragUrisFree(char **uris, int size) {
for (int i = 0; i < size; i++) {
free(uris[i]);
}
free(uris);
}

65
internal/desktop/drop/drop.go Normal file
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@ -0,0 +1,65 @@
package drop
/*
#cgo pkg-config: gtk+-3.0
#include "drop.h"
*/
import "C"
import (
"sync"
"github.com/kataras/go-events"
)
var Emmiter events.EventEmmiter
var mu = sync.Mutex{}
func init() {
Emmiter = events.New()
}
func OpenWindow(files []string) {
mu.Lock()
defer mu.Unlock()
size := C.int(len(files))
urisUnsafe := C.dragUrisMake(size);
defer C.dragUrisFree(urisUnsafe, size)
for i, file := range files {
C.dragUrisSetFile(urisUnsafe, C.CString(file), C.int(i))
}
C.dragWindowOpen(urisUnsafe)
}
func CloseWindow() {
C.dragWindowClose()
}
//export goDragCreate
func goDragCreate(widget *C.GtkWidget, event *C.GdkEvent, user_data C.gpointer) {
go Emmiter.Emit("create")
}
//export goDragCursorEnter
func goDragCursorEnter(widget *C.GtkWidget, event *C.GdkEvent, user_data C.gpointer) {
go Emmiter.Emit("cursor-enter")
}
//export goDragButtonPress
func goDragButtonPress(widget *C.GtkWidget, event *C.GdkEvent, user_data C.gpointer) {
go Emmiter.Emit("button-press")
}
//export goDragBegin
func goDragBegin(widget *C.GtkWidget, context *C.GdkDragContext, user_data C.gpointer) {
go Emmiter.Emit("begin")
}
//export goDragFinish
func goDragFinish(succeeded C.gboolean) {
go Emmiter.Emit("finish", bool(succeeded == C.int(1)))
}

36
internal/desktop/drop/drop.h Normal file
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@ -0,0 +1,36 @@
#pragma once
#include <gtk/gtk.h>
enum {
DRAG_TARGET_TYPE_TEXT,
DRAG_TARGET_TYPE_URI
};
extern void goDragCreate(GtkWidget *widget, GdkEvent *event, gpointer user_data);
extern void goDragCursorEnter(GtkWidget *widget, GdkEvent *event, gpointer user_data);
extern void goDragButtonPress(GtkWidget *widget, GdkEvent *event, gpointer user_data);
extern void goDragBegin(GtkWidget *widget, GdkDragContext *context, gpointer user_data);
extern void goDragFinish(gboolean succeeded);
static void dragDataGet(
GtkWidget *widget,
GdkDragContext *context,
GtkSelectionData *data,
guint target_type,
guint time,
gpointer user_data
);
static void dragEnd(
GtkWidget *widget,
GdkDragContext *context,
gpointer user_data
);
void dragWindowOpen(char **uris);
void dragWindowClose();
char **dragUrisMake(int size);
void dragUrisSetFile(char **uris, char *file, int n);
void dragUrisFree(char **uris, int size);

38
internal/desktop/gtk.go
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@ -1,38 +0,0 @@
package desktop
import (
"time"
"demodesk/neko/internal/desktop/gtk"
)
const (
DELAY = 100 * time.Millisecond
)
func (manager *DesktopManagerCtx) DropFiles(x int, y int, files []string) {
mu.Lock()
defer mu.Unlock()
go gtk.DragWindow(files)
// TODO: Find a bettter way.
for step := 1; step <= 6; step++ {
time.Sleep(DELAY)
switch step {
case 1:
manager.Move(0, 0)
case 2:
manager.ButtonDown(1)
case 3:
fallthrough
case 4:
fallthrough
case 5:
manager.Move(x, y)
case 6:
manager.ButtonUp(1)
}
}
}

103
internal/desktop/gtk/gtk.c
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@ -1,103 +0,0 @@
#include "gtk.h"
static void drag_data_get(
GtkWidget *widget,
GdkDragContext *context,
GtkSelectionData *data,
guint target_type,
guint time,
gpointer user_data
) {
gchar **uris = (gchar **) user_data;
if (target_type == TARGET_TYPE_URI) {
gtk_selection_data_set_uris(data, uris);
return;
}
if (target_type == TARGET_TYPE_TEXT) {
gtk_selection_data_set_text(data, uris[0], -1);
return;
}
}
static void drag_end(
GtkWidget *widget,
GdkDragContext *context,
gpointer user_data
) {
gboolean succeeded = gdk_drag_drop_succeeded(context);
GdkDragAction action = gdk_drag_context_get_selected_action(context);
char* action_str;
switch (action) {
case GDK_ACTION_COPY:
action_str = "COPY"; break;
case GDK_ACTION_MOVE:
action_str = "MOVE"; break;
case GDK_ACTION_LINK:
action_str = "LINK"; break;
case GDK_ACTION_ASK:
action_str = "ASK"; break;
default:
action_str = malloc(sizeof(char) * 20);
snprintf(action_str, 20, "invalid (%d)", action);
break;
}
fprintf(stderr, "Selected drop action: %s; Succeeded: %d\n", action_str, succeeded);
if (action_str[0] == 'i') {
free(action_str);
}
gtk_widget_destroy(widget);
}
void drag_window(char **uris) {
if (gtk_init_check(NULL, NULL) == FALSE) {
fprintf(stderr, "Unable to initialize GTK for drag and drop widget!\n");
return;
}
GtkWidget *widget = gtk_window_new(GTK_WINDOW_TOPLEVEL);
GtkWindow *window = GTK_WINDOW(widget);
gtk_window_move(window, 0, 0);
gtk_window_set_title(window, "Neko Drag & Drop Window");
gtk_window_set_decorated(window, FALSE);
gtk_window_set_keep_above(window, TRUE);
gtk_window_set_default_size(window, 0, 0);
GtkTargetList* target_list = gtk_target_list_new(NULL, 0);
gtk_target_list_add_uri_targets(target_list, TARGET_TYPE_URI);
gtk_target_list_add_text_targets(target_list, TARGET_TYPE_TEXT);
gtk_drag_source_set(widget, GDK_BUTTON1_MASK, NULL, 0, GDK_ACTION_COPY | GDK_ACTION_LINK | GDK_ACTION_ASK);
gtk_drag_source_set_target_list(widget, target_list);
g_signal_connect(widget, "drag-data-get", G_CALLBACK(drag_data_get), uris);
g_signal_connect(widget, "drag-end", G_CALLBACK(drag_end), NULL);
g_signal_connect(window, "destroy", G_CALLBACK(gtk_main_quit), NULL);
fprintf(stderr, "Preparing to show drag and drop widget.\n");
gtk_widget_show_all(widget);
gtk_main();
}
char **uris_make(int size) {
return calloc(size + 1, sizeof(char *));
}
void uris_set_file(char **uris, char *file, int n) {
GFile *gfile = g_file_new_for_path(file);
uris[n] = g_file_get_uri(gfile);
}
void uris_free(char **uris, int size) {
int i;
for (i = 0; i < size; i++) {
free(uris[i]);
}
free(uris);
}

29
internal/desktop/gtk/gtk.go
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@ -1,29 +0,0 @@
package gtk
/*
#cgo pkg-config: gtk+-3.0
#include "gtk.h"
*/
import "C"
import (
"sync"
)
var mu = sync.Mutex{}
func DragWindow(files []string) {
mu.Lock()
defer mu.Unlock()
size := C.int(len(files))
urisUnsafe := C.uris_make(size);
defer C.uris_free(urisUnsafe, size)
for i, file := range files {
C.uris_set_file(urisUnsafe, C.CString(file), C.int(i))
}
C.drag_window(urisUnsafe)
}

29
internal/desktop/gtk/gtk.h
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@ -1,29 +0,0 @@
#pragma once
#include <gtk/gtk.h>
enum {
TARGET_TYPE_TEXT,
TARGET_TYPE_URI
};
static void drag_data_get(
GtkWidget *widget,
GdkDragContext *context,
GtkSelectionData *data,
guint target_type,
guint time,
gpointer user_data
);
static void drag_end(
GtkWidget *widget,
GdkDragContext *context,
gpointer user_data
);
void drag_window(char **uris);
char **uris_make(int size);
void uris_set_file(char **uris, char *file, int n);
void uris_free(char **uris, int size);

2
internal/types/desktop.go
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@ -59,5 +59,5 @@ type DesktopManager interface {
WriteClipboard(data string)
// drop
DropFiles(x int, y int, files []string)
DropFiles(x int, y int, files []string) bool
}