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gtk2/demos/node-editor/node-editor-window.c
Christian Hergert 2a38cecd33 gsk: add OpenGL based GskNglRenderer 
The primary goal here was to cleanup the current GL renderer to make
maintenance easier going forward. Furthermore, it tracks state to allow
us to implement more advanced renderer features going forward.

Reordering

This renderer will reorder batches by render target to reduce the number
of times render targets are changed.

In the future, we could also reorder by program within the render target
if we can determine that vertices do not overlap.

Uniform Snapshots

To allow for reordering of batches all uniforms need to be tracked for
the programs. This allows us to create the full uniform state when the
batch has been moved into a new position.

Some care was taken as it can be performance sensitive.

Attachment Snapshots

Similar to uniform snapshots, we need to know all of the texture
attachments so that we can rebind them when necessary.

Render Jobs

To help isolate the process of creating GL commands from the renderer
abstraction a render job abstraction was added. This could be extended
in the future if we decided to do tiling.

Command Queue

Render jobs create batches using the command queue. The command queue
will snapshot uniform and attachment state so that it can reorder
batches right before executing them.

Currently, the only reordering done is to ensure that we only visit
each render target once. We could extend this by tracking vertices,
attachments, and others.

This code currently uses an inline array helper to reduce overhead
from GArray which was showing up on profiles. It could be changed to
use GdkArray without too much work, but had roughly double the
instructions. Cycle counts have not yet been determined.

GLSL Programs

This was simplified to use XMACROS so that we can just extend one file
(gskglprograms.defs) instead of multiple places. The programs are added
as fields in the driver for easy access.

Driver

The driver manages textures, render targets, access to atlases,
programs, and more. There is one driver per display, by using the
shared GL context.

Some work could be done here to batch uploads so that we make fewer
calls to upload when sending icon theme data to the GPU. We'd need
to keep a copy of the atlas data for such purposes.
2021-02-23 14:41:52 -08:00

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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"
#include "gsk/ngl/gsknglrenderer.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 *renderer_listbox;
GListStore *renderers;
GdkPaintable *paintable;
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)
{
GskRenderNode *node;
char *text;
GBytes *bytes;
GtkTextIter iter;
GtkTextIter start, end;
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));
/* If this is too slow, go fix the parser performance */
node = gsk_render_node_deserialize (bytes, deserialize_error_func, self);
g_bytes_unref (bytes);
if (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 (node, &bounds);
gtk_snapshot_translate (snapshot, &GRAPHENE_POINT_INIT (- bounds.origin.x, - bounds.origin.y));
gtk_snapshot_append_node (snapshot, node);
gsk_render_node_unref (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 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_file_contents (NodeEditorWindow *self,
GFile *file)
{
GBytes *bytes;
bytes = g_file_load_bytes (file, NULL, NULL, NULL);
if (bytes == NULL)
return FALSE;
if (!g_utf8_validate (g_bytes_get_data (bytes, NULL), g_bytes_get_size (bytes), NULL))
{
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 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;
if (!load_file_contents (self, file))
return FALSE;
g_clear_object (&self->file_monitor);
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);
}
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;
GdkSurface *surface;
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;
surface = gtk_native_get_surface (gtk_widget_get_native (GTK_WIDGET (self)));
renderer = gsk_cairo_renderer_new ();
gsk_renderer_realize (renderer, surface, 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
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_finalize (GObject *object)
{
NodeEditorWindow *self = (NodeEditorWindow *)object;
g_array_free (self->errors, TRUE);
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)
{
GdkSurface *surface;
GdkPaintable *paintable;
surface = gtk_native_get_surface (GTK_NATIVE (self));
g_assert (surface != NULL);
if (renderer != NULL && !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");
node_editor_window_add_renderer (self,
gsk_ngl_renderer_new (),
"NGL");
#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->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_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, 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);
}
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);
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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