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gtk2/demos/node-editor/node-editor-window.c
Emmanuele Bassi f4f683a469 Rename clear_template to dispose_template 
Make it more clear that the function is supposed to be called during the
dispose sequence of a widget.
2022-07-11 18:24:37 +01:00

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/*
* Copyright © 2019 Benjamin Otte
*
* 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, see <http://www.gnu.org/licenses/>.
*
* Authors: Benjamin Otte <otte@gnome.org>
*/
#include "config.h"
#include "node-editor-window.h"
#include "gtkrendererpaintableprivate.h"
#include "gsk/gskrendernodeparserprivate.h"
#include "gsk/gl/gskglrenderer.h"
#ifdef GDK_WINDOWING_BROADWAY
#include "gsk/broadway/gskbroadwayrenderer.h"
#endif
#ifdef GDK_RENDERING_VULKAN
#include "gsk/vulkan/gskvulkanrenderer.h"
#endif
#ifndef NODE_EDITOR_SOURCE_DIR
#define NODE_EDITOR_SOURCE_DIR "." /* Fallback */
#endif
typedef struct
{
gsize start_chars;
gsize end_chars;
char *message;
} TextViewError;
struct _NodeEditorWindow
{
GtkApplicationWindow parent;
GtkWidget *picture;
GtkWidget *text_view;
GtkTextBuffer *text_buffer;
GtkTextTagTable *tag_table;
GtkWidget *testcase_popover;
GtkWidget *testcase_error_label;
GtkWidget *testcase_cairo_checkbutton;
GtkWidget *testcase_name_entry;
GtkWidget *testcase_save_button;
GtkWidget *scale_scale;
GtkWidget *renderer_listbox;
GListStore *renderers;
GskRenderNode *node;
GFileMonitor *file_monitor;
GArray *errors;
};
struct _NodeEditorWindowClass
{
GtkApplicationWindowClass parent_class;
};
G_DEFINE_TYPE(NodeEditorWindow, node_editor_window, GTK_TYPE_APPLICATION_WINDOW);
static void
text_view_error_free (TextViewError *e)
{
g_free (e->message);
}
static char *
get_current_text (GtkTextBuffer *buffer)
{
GtkTextIter start, end;
gtk_text_buffer_get_start_iter (buffer, &start);
gtk_text_buffer_get_end_iter (buffer, &end);
return gtk_text_buffer_get_text (buffer, &start, &end, FALSE);
}
static void
text_buffer_remove_all_tags (GtkTextBuffer *buffer)
{
GtkTextIter start, end;
gtk_text_buffer_get_start_iter (buffer, &start);
gtk_text_buffer_get_end_iter (buffer, &end);
gtk_text_buffer_remove_all_tags (buffer, &start, &end);
}
static void
deserialize_error_func (const GskParseLocation *start_location,
const GskParseLocation *end_location,
const GError *error,
gpointer user_data)
{
NodeEditorWindow *self = user_data;
GtkTextIter start_iter, end_iter;
TextViewError text_view_error;
gtk_text_buffer_get_iter_at_line_offset (self->text_buffer, &start_iter,
start_location->lines,
start_location->line_chars);
gtk_text_buffer_get_iter_at_line_offset (self->text_buffer, &end_iter,
end_location->lines,
end_location->line_chars);
gtk_text_buffer_apply_tag_by_name (self->text_buffer, "error",
&start_iter, &end_iter);
text_view_error.start_chars = start_location->chars;
text_view_error.end_chars = end_location->chars;
text_view_error.message = g_strdup (error->message);
g_array_append_val (self->errors, text_view_error);
}
static void
text_iter_skip_alpha_backward (GtkTextIter *iter)
{
/* Just skip to the previous non-whitespace char */
while (!gtk_text_iter_is_start (iter))
{
gunichar c = gtk_text_iter_get_char (iter);
if (g_unichar_isspace (c))
{
gtk_text_iter_forward_char (iter);
break;
}
gtk_text_iter_backward_char (iter);
}
}
static void
text_iter_skip_whitespace_backward (GtkTextIter *iter)
{
while (!gtk_text_iter_is_start (iter))
{
gunichar c = gtk_text_iter_get_char (iter);
if (g_unichar_isalpha (c))
{
gtk_text_iter_forward_char (iter);
break;
}
gtk_text_iter_backward_char (iter);
}
}
static void
text_changed (GtkTextBuffer *buffer,
NodeEditorWindow *self)
{
char *text;
GBytes *bytes;
GtkTextIter iter;
GtkTextIter start, end;
float scale;
g_array_remove_range (self->errors, 0, self->errors->len);
text = get_current_text (self->text_buffer);
text_buffer_remove_all_tags (self->text_buffer);
bytes = g_bytes_new_take (text, strlen (text));
g_clear_pointer (&self->node, gsk_render_node_unref);
/* If this is too slow, go fix the parser performance */
self->node = gsk_render_node_deserialize (bytes, deserialize_error_func, self);
scale = gtk_scale_button_get_value (GTK_SCALE_BUTTON (self->scale_scale));
if (self->node && scale != 1.0)
{
GskRenderNode *node;
node = gsk_transform_node_new (self->node, gsk_transform_scale (NULL, scale, scale));
gsk_render_node_unref (self->node);
self->node = node;
}
g_bytes_unref (bytes);
if (self->node)
{
/* XXX: Is this code necessary or can we have API to turn nodes into paintables? */
GtkSnapshot *snapshot;
GdkPaintable *paintable;
graphene_rect_t bounds;
guint i;
snapshot = gtk_snapshot_new ();
gsk_render_node_get_bounds (self->node, &bounds);
gtk_snapshot_translate (snapshot, &GRAPHENE_POINT_INIT (- bounds.origin.x, - bounds.origin.y));
gtk_snapshot_append_node (snapshot, self->node);
paintable = gtk_snapshot_free_to_paintable (snapshot, &bounds.size);
gtk_picture_set_paintable (GTK_PICTURE (self->picture), paintable);
for (i = 0; i < g_list_model_get_n_items (G_LIST_MODEL (self->renderers)); i++)
{
gpointer item = g_list_model_get_item (G_LIST_MODEL (self->renderers), i);
gtk_renderer_paintable_set_paintable (item, paintable);
g_object_unref (item);
}
g_clear_object (&paintable);
}
else
{
gtk_picture_set_paintable (GTK_PICTURE (self->picture), NULL);
}
gtk_text_buffer_get_start_iter (self->text_buffer, &iter);
while (!gtk_text_iter_is_end (&iter))
{
gunichar c = gtk_text_iter_get_char (&iter);
if (c == '{')
{
GtkTextIter word_end = iter;
GtkTextIter word_start;
gtk_text_iter_backward_char (&word_end);
text_iter_skip_whitespace_backward (&word_end);
word_start = word_end;
gtk_text_iter_backward_word_start (&word_start);
text_iter_skip_alpha_backward (&word_start);
gtk_text_buffer_apply_tag_by_name (self->text_buffer, "nodename",
&word_start, &word_end);
}
else if (c == ':')
{
GtkTextIter word_end = iter;
GtkTextIter word_start;
gtk_text_iter_backward_char (&word_end);
text_iter_skip_whitespace_backward (&word_end);
word_start = word_end;
gtk_text_iter_backward_word_start (&word_start);
text_iter_skip_alpha_backward (&word_start);
gtk_text_buffer_apply_tag_by_name (self->text_buffer, "propname",
&word_start, &word_end);
}
else if (c == '"')
{
GtkTextIter string_start = iter;
GtkTextIter string_end = iter;
gtk_text_iter_forward_char (&iter);
while (!gtk_text_iter_is_end (&iter))
{
c = gtk_text_iter_get_char (&iter);
if (c == '"')
{
gtk_text_iter_forward_char (&iter);
string_end = iter;
break;
}
gtk_text_iter_forward_char (&iter);
}
gtk_text_buffer_apply_tag_by_name (self->text_buffer, "string",
&string_start, &string_end);
}
gtk_text_iter_forward_char (&iter);
}
gtk_text_buffer_get_bounds (self->text_buffer, &start, &end);
gtk_text_buffer_apply_tag_by_name (self->text_buffer, "no-hyphens",
&start, &end);
}
static void
scale_changed (GObject *object,
GParamSpec *pspec,
NodeEditorWindow *self)
{
text_changed (self->text_buffer, self);
}
static gboolean
text_view_query_tooltip_cb (GtkWidget *widget,
int x,
int y,
gboolean keyboard_tip,
GtkTooltip *tooltip,
NodeEditorWindow *self)
{
GtkTextIter iter;
guint i;
GString *text;
if (keyboard_tip)
{
int offset;
g_object_get (self->text_buffer, "cursor-position", &offset, NULL);
gtk_text_buffer_get_iter_at_offset (self->text_buffer, &iter, offset);
}
else
{
int bx, by, trailing;
gtk_text_view_window_to_buffer_coords (GTK_TEXT_VIEW (self->text_view), GTK_TEXT_WINDOW_TEXT,
x, y, &bx, &by);
gtk_text_view_get_iter_at_position (GTK_TEXT_VIEW (self->text_view), &iter, &trailing, bx, by);
}
text = g_string_new ("");
for (i = 0; i < self->errors->len; i ++)
{
const TextViewError *e = &g_array_index (self->errors, TextViewError, i);
GtkTextIter start_iter, end_iter;
gtk_text_buffer_get_iter_at_offset (self->text_buffer, &start_iter, e->start_chars);
gtk_text_buffer_get_iter_at_offset (self->text_buffer, &end_iter, e->end_chars);
if (gtk_text_iter_in_range (&iter, &start_iter, &end_iter))
{
if (text->len > 0)
g_string_append (text, "\n");
g_string_append (text, e->message);
}
}
if (text->len > 0)
{
gtk_tooltip_set_text (tooltip, text->str);
g_string_free (text, TRUE);
return TRUE;
}
else
{
g_string_free (text, TRUE);
return FALSE;
}
}
static gboolean
load_bytes (NodeEditorWindow *self,
GBytes *bytes);
static void
load_error (NodeEditorWindow *self,
const char *error_message)
{
PangoLayout *layout;
GtkSnapshot *snapshot;
GskRenderNode *node;
GBytes *bytes;
layout = gtk_widget_create_pango_layout (GTK_WIDGET (self), error_message);
pango_layout_set_width (layout, 300 * PANGO_SCALE);
snapshot = gtk_snapshot_new ();
gtk_snapshot_append_layout (snapshot, layout, &(GdkRGBA) { 0.7, 0.13, 0.13, 1.0 });
node = gtk_snapshot_free_to_node (snapshot);
bytes = gsk_render_node_serialize (node);
load_bytes (self, bytes);
gsk_render_node_unref (node);
g_object_unref (layout);
}
static gboolean
load_bytes (NodeEditorWindow *self,
GBytes *bytes)
{
if (!g_utf8_validate (g_bytes_get_data (bytes, NULL), g_bytes_get_size (bytes), NULL))
{
load_error (self, "Invalid UTF-8");
g_bytes_unref (bytes);
return FALSE;
}
gtk_text_buffer_set_text (self->text_buffer,
g_bytes_get_data (bytes, NULL),
g_bytes_get_size (bytes));
g_bytes_unref (bytes);
return TRUE;
}
static gboolean
load_file_contents (NodeEditorWindow *self,
GFile *file)
{
GError *error = NULL;
GBytes *bytes;
bytes = g_file_load_bytes (file, NULL, NULL, &error);
if (bytes == NULL)
{
load_error (self, error->message);
g_clear_error (&error);
return FALSE;
}
return load_bytes (self, bytes);
}
static GdkContentProvider *
on_picture_drag_prepare_cb (GtkDragSource *source,
double x,
double y,
NodeEditorWindow *self)
{
if (self->node == NULL)
return NULL;
return gdk_content_provider_new_typed (GSK_TYPE_RENDER_NODE, self->node);
}
static void
on_picture_drop_read_done_cb (GObject *source,
GAsyncResult *res,
gpointer data)
{
NodeEditorWindow *self = data;
GOutputStream *stream = G_OUTPUT_STREAM (source);
GdkDrop *drop = g_object_get_data (source, "drop");
GdkDragAction action = 0;
GBytes *bytes;
if (g_output_stream_splice_finish (stream, res, NULL) >= 0)
{
bytes = g_memory_output_stream_steal_as_bytes (G_MEMORY_OUTPUT_STREAM (stream));
if (load_bytes (self, bytes))
action = GDK_ACTION_COPY;
}
g_object_unref (self);
gdk_drop_finish (drop, action);
g_object_unref (drop);
return;
}
static void
on_picture_drop_read_cb (GObject *source,
GAsyncResult *res,
gpointer data)
{
NodeEditorWindow *self = data;
GdkDrop *drop = GDK_DROP (source);
GInputStream *input;
GOutputStream *output;
input = gdk_drop_read_finish (drop, res, NULL, NULL);
if (input == NULL)
{
g_object_unref (self);
gdk_drop_finish (drop, 0);
return;
}
output = g_memory_output_stream_new_resizable ();
g_object_set_data (G_OBJECT (output), "drop", drop);
g_object_ref (drop);
g_output_stream_splice_async (output,
input,
G_OUTPUT_STREAM_SPLICE_CLOSE_SOURCE | G_OUTPUT_STREAM_SPLICE_CLOSE_TARGET,
G_PRIORITY_DEFAULT,
NULL,
on_picture_drop_read_done_cb,
self);
g_object_unref (output);
g_object_unref (input);
}
static gboolean
on_picture_drop_cb (GtkDropTargetAsync *dest,
GdkDrop *drop,
double x,
double y,
NodeEditorWindow *self)
{
gdk_drop_read_async (drop,
(const char *[2]) { "application/x-gtk-render-node", NULL },
G_PRIORITY_DEFAULT,
NULL,
on_picture_drop_read_cb,
g_object_ref (self));
return TRUE;
}
static void
file_changed_cb (GFileMonitor *monitor,
GFile *file,
GFile *other_file,
GFileMonitorEvent event_type,
gpointer user_data)
{
NodeEditorWindow *self = user_data;
if (event_type == G_FILE_MONITOR_EVENT_CHANGED)
load_file_contents (self, file);
}
gboolean
node_editor_window_load (NodeEditorWindow *self,
GFile *file)
{
GError *error = NULL;
g_clear_object (&self->file_monitor);
if (!load_file_contents (self, file))
return FALSE;
self->file_monitor = g_file_monitor_file (file, G_FILE_MONITOR_NONE, NULL, &error);
if (error)
{
g_warning ("couldn't monitor file: %s", error->message);
g_error_free (error);
g_clear_object (&self->file_monitor);
}
else
{
g_signal_connect (self->file_monitor, "changed", G_CALLBACK (file_changed_cb), self);
}
return TRUE;
}
static void
open_response_cb (GtkWidget *dialog,
int response,
NodeEditorWindow *self)
{
gtk_widget_hide (dialog);
if (response == GTK_RESPONSE_ACCEPT)
{
GFile *file;
file = gtk_file_chooser_get_file (GTK_FILE_CHOOSER (dialog));
node_editor_window_load (self, file);
g_object_unref (file);
}
gtk_window_destroy (GTK_WINDOW (dialog));
}
static void
show_open_filechooser (NodeEditorWindow *self)
{
GtkWidget *dialog;
dialog = gtk_file_chooser_dialog_new ("Open node file",
GTK_WINDOW (self),
GTK_FILE_CHOOSER_ACTION_OPEN,
"_Cancel", GTK_RESPONSE_CANCEL,
"_Load", GTK_RESPONSE_ACCEPT,
NULL);
gtk_dialog_set_default_response (GTK_DIALOG (dialog), GTK_RESPONSE_ACCEPT);
gtk_window_set_modal (GTK_WINDOW (dialog), TRUE);
GFile *cwd = g_file_new_for_path (".");
gtk_file_chooser_set_current_folder (GTK_FILE_CHOOSER (dialog), cwd, NULL);
g_object_unref (cwd);
g_signal_connect (dialog, "response", G_CALLBACK (open_response_cb), self);
gtk_widget_show (dialog);
}
static void
open_cb (GtkWidget *button,
NodeEditorWindow *self)
{
show_open_filechooser (self);
}
static void
save_response_cb (GtkWidget *dialog,
int response,
NodeEditorWindow *self)
{
gtk_widget_hide (dialog);
if (response == GTK_RESPONSE_ACCEPT)
{
GFile *file;
char *text;
GError *error = NULL;
text = get_current_text (self->text_buffer);
file = gtk_file_chooser_get_file (GTK_FILE_CHOOSER (dialog));
g_file_replace_contents (file, text, strlen (text),
NULL, FALSE,
G_FILE_CREATE_NONE,
NULL,
NULL,
&error);
if (error != NULL)
{
GtkWidget *message_dialog;
message_dialog = gtk_message_dialog_new (GTK_WINDOW (gtk_widget_get_root (GTK_WIDGET (self))),
GTK_DIALOG_MODAL|GTK_DIALOG_DESTROY_WITH_PARENT,
GTK_MESSAGE_INFO,
GTK_BUTTONS_OK,
"Saving failed");
gtk_message_dialog_format_secondary_text (GTK_MESSAGE_DIALOG (message_dialog),
"%s", error->message);
g_signal_connect (message_dialog, "response", G_CALLBACK (gtk_window_destroy), NULL);
gtk_widget_show (message_dialog);
g_error_free (error);
}
g_free (text);
g_object_unref (file);
}
gtk_window_destroy (GTK_WINDOW (dialog));
}
static void
save_cb (GtkWidget *button,
NodeEditorWindow *self)
{
GtkWidget *dialog;
dialog = gtk_file_chooser_dialog_new ("Save node",
GTK_WINDOW (gtk_widget_get_root (GTK_WIDGET (button))),
GTK_FILE_CHOOSER_ACTION_SAVE,
"_Cancel", GTK_RESPONSE_CANCEL,
"_Save", GTK_RESPONSE_ACCEPT,
NULL);
gtk_dialog_set_default_response (GTK_DIALOG (dialog), GTK_RESPONSE_ACCEPT);
gtk_window_set_modal (GTK_WINDOW (dialog), TRUE);
GFile *cwd = g_file_new_for_path (".");
gtk_file_chooser_set_current_folder (GTK_FILE_CHOOSER (dialog), cwd, NULL);
g_object_unref (cwd);
g_signal_connect (dialog, "response", G_CALLBACK (save_response_cb), self);
gtk_widget_show (dialog);
}
static GdkTexture *
create_texture (NodeEditorWindow *self)
{
GdkPaintable *paintable;
GtkSnapshot *snapshot;
GskRenderer *renderer;
GskRenderNode *node;
GdkTexture *texture;
paintable = gtk_picture_get_paintable (GTK_PICTURE (self->picture));
if (paintable == NULL ||
gdk_paintable_get_intrinsic_width (paintable) <= 0 ||
gdk_paintable_get_intrinsic_height (paintable) <= 0)
return NULL;
snapshot = gtk_snapshot_new ();
gdk_paintable_snapshot (paintable, snapshot, gdk_paintable_get_intrinsic_width (paintable), gdk_paintable_get_intrinsic_height (paintable));
node = gtk_snapshot_free_to_node (snapshot);
if (node == NULL)
return NULL;
renderer = gtk_native_get_renderer (gtk_widget_get_native (GTK_WIDGET (self)));
texture = gsk_renderer_render_texture (renderer, node, NULL);
gsk_render_node_unref (node);
return texture;
}
static GdkTexture *
create_cairo_texture (NodeEditorWindow *self)
{
GdkPaintable *paintable;
GtkSnapshot *snapshot;
GskRenderer *renderer;
GskRenderNode *node;
GdkTexture *texture;
paintable = gtk_picture_get_paintable (GTK_PICTURE (self->picture));
if (paintable == NULL ||
gdk_paintable_get_intrinsic_width (paintable) <= 0 ||
gdk_paintable_get_intrinsic_height (paintable) <= 0)
return NULL;
snapshot = gtk_snapshot_new ();
gdk_paintable_snapshot (paintable, snapshot, gdk_paintable_get_intrinsic_width (paintable), gdk_paintable_get_intrinsic_height (paintable));
node = gtk_snapshot_free_to_node (snapshot);
if (node == NULL)
return NULL;
renderer = gsk_cairo_renderer_new ();
gsk_renderer_realize (renderer, NULL, NULL);
texture = gsk_renderer_render_texture (renderer, node, NULL);
gsk_render_node_unref (node);
gsk_renderer_unrealize (renderer);
g_object_unref (renderer);
return texture;
}
static void
export_image_response_cb (GtkWidget *dialog,
int response,
GdkTexture *texture)
{
gtk_widget_hide (dialog);
if (response == GTK_RESPONSE_ACCEPT)
{
GFile *file;
file = gtk_file_chooser_get_file (GTK_FILE_CHOOSER (dialog));
if (!gdk_texture_save_to_png (texture, g_file_peek_path (file)))
{
GtkWidget *message_dialog;
message_dialog = gtk_message_dialog_new (GTK_WINDOW (gtk_window_get_transient_for (GTK_WINDOW (dialog))),
GTK_DIALOG_MODAL|GTK_DIALOG_DESTROY_WITH_PARENT,
GTK_MESSAGE_INFO,
GTK_BUTTONS_OK,
"Exporting to image failed");
g_signal_connect (message_dialog, "response", G_CALLBACK (gtk_window_destroy), NULL);
gtk_widget_show (message_dialog);
}
g_object_unref (file);
}
gtk_window_destroy (GTK_WINDOW (dialog));
g_object_unref (texture);
}
static void
export_image_cb (GtkWidget *button,
NodeEditorWindow *self)
{
GdkTexture *texture;
GtkWidget *dialog;
texture = create_texture (self);
if (texture == NULL)
return;
dialog = gtk_file_chooser_dialog_new ("",
GTK_WINDOW (gtk_widget_get_root (GTK_WIDGET (button))),
GTK_FILE_CHOOSER_ACTION_SAVE,
"_Cancel", GTK_RESPONSE_CANCEL,
"_Save", GTK_RESPONSE_ACCEPT,
NULL);
gtk_dialog_set_default_response (GTK_DIALOG (dialog), GTK_RESPONSE_ACCEPT);
gtk_window_set_modal (GTK_WINDOW (dialog), TRUE);
g_signal_connect (dialog, "response", G_CALLBACK (export_image_response_cb), texture);
gtk_widget_show (dialog);
}
static void
clip_image_cb (GtkWidget *button,
NodeEditorWindow *self)
{
GdkTexture *texture;
GdkClipboard *clipboard;
texture = create_texture (self);
if (texture == NULL)
return;
clipboard = gtk_widget_get_clipboard (GTK_WIDGET (self));
gdk_clipboard_set_texture (clipboard, texture);
g_object_unref (texture);
}
static void
testcase_name_entry_changed_cb (GtkWidget *button,
GParamSpec *pspec,
NodeEditorWindow *self)
{
const char *text = gtk_editable_get_text (GTK_EDITABLE (self->testcase_name_entry));
if (strlen (text) > 0)
gtk_widget_set_sensitive (self->testcase_save_button, TRUE);
else
gtk_widget_set_sensitive (self->testcase_save_button, FALSE);
}
static void
testcase_save_clicked_cb (GtkWidget *button,
NodeEditorWindow *self)
{
const char *testcase_name = gtk_editable_get_text (GTK_EDITABLE (self->testcase_name_entry));
char *source_dir = g_canonicalize_filename (NODE_EDITOR_SOURCE_DIR, NULL);
char *node_file_name;
char *node_file;
char *png_file_name;
char *png_file;
char *text = NULL;
GdkTexture *texture;
GError *error = NULL;
node_file_name = g_strconcat (testcase_name, ".node", NULL);
node_file = g_build_filename (source_dir, node_file_name, NULL);
g_free (node_file_name);
png_file_name = g_strconcat (testcase_name, ".png", NULL);
png_file = g_build_filename (source_dir, png_file_name, NULL);
g_free (png_file_name);
if (gtk_check_button_get_active (GTK_CHECK_BUTTON (self->testcase_cairo_checkbutton)))
texture = create_cairo_texture (self);
else
texture = create_texture (self);
if (!gdk_texture_save_to_png (texture, png_file))
{
gtk_label_set_label (GTK_LABEL (self->testcase_error_label),
"Could not save texture file");
goto out;
}
text = get_current_text (self->text_buffer);
if (!g_file_set_contents (node_file, text, -1, &error))
{
gtk_label_set_label (GTK_LABEL (self->testcase_error_label), error->message);
/* TODO: Remove texture file again? */
goto out;
}
gtk_editable_set_text (GTK_EDITABLE (self->testcase_name_entry), "");
gtk_popover_popdown (GTK_POPOVER (self->testcase_popover));
out:
g_free (text);
g_free (png_file);
g_free (node_file);
g_free (source_dir);
}
static void
dark_mode_cb (GtkToggleButton *button,
GParamSpec *pspec,
NodeEditorWindow *self)
{
g_object_set (gtk_widget_get_settings (GTK_WIDGET (self)),
"gtk-application-prefer-dark-theme", gtk_toggle_button_get_active (button),
NULL);
}
static void
node_editor_window_dispose (GObject *object)
{
gtk_widget_dispose_template (GTK_WIDGET (object), NODE_EDITOR_WINDOW_TYPE);
G_OBJECT_CLASS (node_editor_window_parent_class)->dispose (object);
}
static void
node_editor_window_finalize (GObject *object)
{
NodeEditorWindow *self = (NodeEditorWindow *)object;
g_array_free (self->errors, TRUE);
g_clear_pointer (&self->node, gsk_render_node_unref);
g_clear_object (&self->renderers);
G_OBJECT_CLASS (node_editor_window_parent_class)->finalize (object);
}
static void
node_editor_window_add_renderer (NodeEditorWindow *self,
GskRenderer *renderer,
const char *description)
{
GdkPaintable *paintable;
if (!gsk_renderer_realize (renderer, NULL, NULL))
{
GdkSurface *surface = gtk_native_get_surface (GTK_NATIVE (self));
g_assert (surface != NULL);
if (!gsk_renderer_realize (renderer, surface, NULL))
{
g_object_unref (renderer);
return;
}
}
paintable = gtk_renderer_paintable_new (renderer, gtk_picture_get_paintable (GTK_PICTURE (self->picture)));
g_object_set_data_full (G_OBJECT (paintable), "description", g_strdup (description), g_free);
g_clear_object (&renderer);
g_list_store_append (self->renderers, paintable);
g_object_unref (paintable);
}
static void
node_editor_window_realize (GtkWidget *widget)
{
NodeEditorWindow *self = NODE_EDITOR_WINDOW (widget);
GTK_WIDGET_CLASS (node_editor_window_parent_class)->realize (widget);
#if 0
node_editor_window_add_renderer (self,
NULL,
"Default");
#endif
node_editor_window_add_renderer (self,
gsk_gl_renderer_new (),
"OpenGL");
#ifdef GDK_RENDERING_VULKAN
node_editor_window_add_renderer (self,
gsk_vulkan_renderer_new (),
"Vulkan");
#endif
#ifdef GDK_WINDOWING_BROADWAY
node_editor_window_add_renderer (self,
gsk_broadway_renderer_new (),
"Broadway");
#endif
node_editor_window_add_renderer (self,
gsk_cairo_renderer_new (),
"Cairo");
}
static void
node_editor_window_unrealize (GtkWidget *widget)
{
NodeEditorWindow *self = NODE_EDITOR_WINDOW (widget);
guint i;
for (i = 0; i < g_list_model_get_n_items (G_LIST_MODEL (self->renderers)); i ++)
{
gpointer item = g_list_model_get_item (G_LIST_MODEL (self->renderers), i);
gsk_renderer_unrealize (gtk_renderer_paintable_get_renderer (item));
g_object_unref (item);
}
g_list_store_remove_all (self->renderers);
GTK_WIDGET_CLASS (node_editor_window_parent_class)->unrealize (widget);
}
static void
node_editor_window_class_init (NodeEditorWindowClass *class)
{
GObjectClass *object_class = G_OBJECT_CLASS (class);
GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
object_class->dispose = node_editor_window_dispose;
object_class->finalize = node_editor_window_finalize;
gtk_widget_class_set_template_from_resource (widget_class,
"/org/gtk/gtk4/node-editor/node-editor-window.ui");
widget_class->realize = node_editor_window_realize;
widget_class->unrealize = node_editor_window_unrealize;
gtk_widget_class_bind_template_child (widget_class, NodeEditorWindow, text_view);
gtk_widget_class_bind_template_child (widget_class, NodeEditorWindow, picture);
gtk_widget_class_bind_template_child (widget_class, NodeEditorWindow, renderer_listbox);
gtk_widget_class_bind_template_child (widget_class, NodeEditorWindow, testcase_popover);
gtk_widget_class_bind_template_child (widget_class, NodeEditorWindow, testcase_error_label);
gtk_widget_class_bind_template_child (widget_class, NodeEditorWindow, testcase_cairo_checkbutton);
gtk_widget_class_bind_template_child (widget_class, NodeEditorWindow, testcase_name_entry);
gtk_widget_class_bind_template_child (widget_class, NodeEditorWindow, testcase_save_button);
gtk_widget_class_bind_template_child (widget_class, NodeEditorWindow, scale_scale);
gtk_widget_class_bind_template_callback (widget_class, text_view_query_tooltip_cb);
gtk_widget_class_bind_template_callback (widget_class, open_cb);
gtk_widget_class_bind_template_callback (widget_class, save_cb);
gtk_widget_class_bind_template_callback (widget_class, export_image_cb);
gtk_widget_class_bind_template_callback (widget_class, clip_image_cb);
gtk_widget_class_bind_template_callback (widget_class, testcase_save_clicked_cb);
gtk_widget_class_bind_template_callback (widget_class, testcase_name_entry_changed_cb);
gtk_widget_class_bind_template_callback (widget_class, dark_mode_cb);
gtk_widget_class_bind_template_callback (widget_class, on_picture_drag_prepare_cb);
gtk_widget_class_bind_template_callback (widget_class, on_picture_drop_cb);
}
static GtkWidget *
node_editor_window_create_renderer_widget (gpointer item,
gpointer user_data)
{
GdkPaintable *paintable = item;
GtkWidget *box, *label, *picture;
GtkWidget *row;
box = gtk_box_new (GTK_ORIENTATION_VERTICAL, 0);
gtk_widget_set_size_request (box, 120, 90);
label = gtk_label_new (g_object_get_data (G_OBJECT (paintable), "description"));
gtk_widget_add_css_class (label, "title-4");
gtk_box_append (GTK_BOX (box), label);
picture = gtk_picture_new_for_paintable (paintable);
/* don't ever scale up, we want to be as accurate as possible */
gtk_widget_set_halign (picture, GTK_ALIGN_CENTER);
gtk_widget_set_valign (picture, GTK_ALIGN_CENTER);
gtk_box_append (GTK_BOX (box), picture);
row = gtk_list_box_row_new ();
gtk_list_box_row_set_child (GTK_LIST_BOX_ROW (row), box);
gtk_list_box_row_set_activatable (GTK_LIST_BOX_ROW (row), FALSE);
return row;
}
static void
window_open (GSimpleAction *action,
GVariant *parameter,
gpointer user_data)
{
NodeEditorWindow *self = user_data;
show_open_filechooser (self);
}
static GActionEntry win_entries[] = {
{ "open", window_open, NULL, NULL, NULL },
};
static void
node_editor_window_init (NodeEditorWindow *self)
{
gtk_widget_init_template (GTK_WIDGET (self));
self->renderers = g_list_store_new (GDK_TYPE_PAINTABLE);
gtk_list_box_bind_model (GTK_LIST_BOX (self->renderer_listbox),
G_LIST_MODEL (self->renderers),
node_editor_window_create_renderer_widget,
self,
NULL);
self->errors = g_array_new (FALSE, TRUE, sizeof (TextViewError));
g_array_set_clear_func (self->errors, (GDestroyNotify)text_view_error_free);
g_action_map_add_action_entries (G_ACTION_MAP (self), win_entries, G_N_ELEMENTS (win_entries), self);
self->tag_table = gtk_text_tag_table_new ();
gtk_text_tag_table_add (self->tag_table,
g_object_new (GTK_TYPE_TEXT_TAG,
"name", "error",
"underline", PANGO_UNDERLINE_ERROR,
NULL));
gtk_text_tag_table_add (self->tag_table,
g_object_new (GTK_TYPE_TEXT_TAG,
"name", "nodename",
"foreground-rgba", &(GdkRGBA) { 0.9, 0.78, 0.53, 1},
NULL));
gtk_text_tag_table_add (self->tag_table,
g_object_new (GTK_TYPE_TEXT_TAG,
"name", "propname",
"foreground-rgba", &(GdkRGBA) { 0.7, 0.55, 0.67, 1},
NULL));
gtk_text_tag_table_add (self->tag_table,
g_object_new (GTK_TYPE_TEXT_TAG,
"name", "string",
"foreground-rgba", &(GdkRGBA) { 0.63, 0.73, 0.54, 1},
NULL));
gtk_text_tag_table_add (self->tag_table,
g_object_new (GTK_TYPE_TEXT_TAG,
"name", "number",
"foreground-rgba", &(GdkRGBA) { 0.8, 0.52, 0.43, 1},
NULL));
gtk_text_tag_table_add (self->tag_table,
g_object_new (GTK_TYPE_TEXT_TAG,
"name", "no-hyphens",
"insert-hyphens", FALSE,
NULL));
self->text_buffer = gtk_text_buffer_new (self->tag_table);
g_signal_connect (self->text_buffer, "changed", G_CALLBACK (text_changed), self);
g_signal_connect (self->scale_scale, "notify::value", G_CALLBACK (scale_changed), self);
gtk_text_view_set_buffer (GTK_TEXT_VIEW (self->text_view), self->text_buffer);
/* Default */
gtk_text_buffer_set_text (self->text_buffer,
"shadow {\n"
" child: texture {\n"
" bounds: 0 0 128 128;\n"
" texture: url(\"resource:///org/gtk/gtk4/node-editor/icons/apps/org.gtk.gtk4.NodeEditor.svg\");\n"
" }\n"
" shadows: rgba(0,0,0,0.5) 0 1 12;\n"
"}\n"
"\n"
"transform {\n"
" child: text {\n"
" color: rgb(46,52,54);\n"
" font: \"Cantarell Bold 11\";\n"
" glyphs: \"GTK Node Editor\";\n"
" offset: 8 14.418;\n"
" }\n"
" transform: translate(0, 140);\n"
"}", -1);
}
NodeEditorWindow *
node_editor_window_new (NodeEditorApplication *application)
{
return g_object_new (NODE_EDITOR_WINDOW_TYPE,
"application", application,
NULL);
}
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