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constraint editor: Implement saving

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Save to a ui file.
This commit is contained in:
Matthias Clasen 2019-07-01 18:39:36 +00:00
parent 377f0c1a0a
commit c5e1b00994
7 changed files with 247 additions and 0 deletions
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21
demos/constraint-editor/constraint-editor-application.c
View File

@ -51,6 +51,7 @@ static void
constraint_editor_application_startup (GApplication *app)
{
const char *quit_accels[2] = { "<Ctrl>Q", NULL };
const char *open_accels[2] = { "<Ctrl>O", NULL };
GtkCssProvider *provider;
G_APPLICATION_CLASS (constraint_editor_application_parent_class)->startup (app);
@ -59,6 +60,7 @@ constraint_editor_application_startup (GApplication *app)
app_entries, G_N_ELEMENTS (app_entries),
app);
gtk_application_set_accels_for_action (GTK_APPLICATION (app), "app.quit", quit_accels);
gtk_application_set_accels_for_action (GTK_APPLICATION (app), "win.open", open_accels);
provider = gtk_css_provider_new ();
gtk_css_provider_load_from_resource (provider, "/org/gtk/gtk4/constraint-editor/constraint-editor.css");
@ -76,6 +78,23 @@ constraint_editor_application_activate (GApplication *app)
gtk_window_present (GTK_WINDOW (win));
}
static void
constraint_editor_application_open (GApplication *app,
GFile **files,
gint n_files,
const gchar *hint)
{
ConstraintEditorWindow *win;
gint i;
for (i = 0; i < n_files; i++)
{
win = constraint_editor_window_new (CONSTRAINT_EDITOR_APPLICATION (app));
constraint_editor_window_load (win, files[i]);
gtk_window_present (GTK_WINDOW (win));
}
}
static void
constraint_editor_application_class_init (ConstraintEditorApplicationClass *class)
{
@ -83,6 +102,7 @@ constraint_editor_application_class_init (ConstraintEditorApplicationClass *clas
application_class->startup = constraint_editor_application_startup;
application_class->activate = constraint_editor_application_activate;
application_class->open = constraint_editor_application_open;
}
ConstraintEditorApplication *
@ -90,5 +110,6 @@ constraint_editor_application_new (void)
{
return g_object_new (CONSTRAINT_EDITOR_APPLICATION_TYPE,
"application-id", "org.gtk.gtk4.ConstraintEditor",
"flags", G_APPLICATION_HANDLES_OPEN,
NULL);
}

147
demos/constraint-editor/constraint-editor-window.c
View File

@ -65,6 +65,151 @@ constraint_editor_window_load (ConstraintEditorWindow *self,
return TRUE;
}
static void
open_response_cb (GtkNativeDialog *dialog,
gint response,
ConstraintEditorWindow *self)
{
gtk_native_dialog_hide (dialog);
if (response == GTK_RESPONSE_ACCEPT)
{
GFile *file;
file = gtk_file_chooser_get_file (GTK_FILE_CHOOSER (dialog));
constraint_editor_window_load (self, file);
g_object_unref (file);
}
gtk_native_dialog_destroy (dialog);
}
static void
open_cb (GtkWidget *button,
ConstraintEditorWindow *self)
{
GtkFileChooserNative *dialog;
dialog = gtk_file_chooser_native_new ("Open file",
GTK_WINDOW (self),
GTK_FILE_CHOOSER_ACTION_OPEN,
"_Load",
"_Cancel");
gtk_native_dialog_set_modal (GTK_NATIVE_DIALOG (dialog), TRUE);
gtk_file_chooser_set_current_folder (GTK_FILE_CHOOSER (dialog), ".");
g_signal_connect (dialog, "response", G_CALLBACK (open_response_cb), self);
gtk_native_dialog_show (GTK_NATIVE_DIALOG (dialog));
}
static void
serialize_child (GString *str,
int indent,
GtkWidget *child)
{
const char *name;
name = gtk_widget_get_name (child);
g_string_append_printf (str, "%*s<child>\n", indent, "");
g_string_append_printf (str, "%*s <object class=\"GtkLabel\" id=\"%s\">\n", indent, "", name);
g_string_append_printf (str, "%*s <property name=\"label\">%s</property>\n", indent, "", name);
g_string_append_printf (str, "%*s </object>\n", indent, "");
g_string_append_printf (str, "%*s</child>\n", indent, "");
}
static char *
serialize_model (GListModel *list)
{
GString *str = g_string_new ("");
int i;
g_string_append (str, "<interface>\n");
g_string_append (str, " <object class=\"GtkBox\" id=\"view\">\n");
g_string_append (str, " <property name=\"layout-manager\">\n");
g_string_append (str, " <object class=\"GtkConstraintLayout\">\n");
g_string_append (str, " <constraints>\n");
for (i = 0; i < g_list_model_get_n_items (list); i++)
{
gpointer item = g_list_model_get_item (list, i);
g_object_unref (item);
if (GTK_IS_CONSTRAINT (item))
constraint_editor_serialize_constraint (str, 10, GTK_CONSTRAINT (item));
else if (GTK_IS_CONSTRAINT_GUIDE (item))
guide_editor_serialize_guide (str, 10, GTK_CONSTRAINT_GUIDE (item));
}
g_string_append (str, " </constraints>\n");
g_string_append (str, " </object>\n");
g_string_append (str, " </property>\n");
for (i = 0; i < g_list_model_get_n_items (list); i++)
{
gpointer item = g_list_model_get_item (list, i);
g_object_unref (item);
if (GTK_IS_WIDGET (item))
serialize_child (str, 4, GTK_WIDGET (item));
}
g_string_append (str, " </object>\n");
g_string_append (str, "</interface>\n");
return g_string_free (str, FALSE);
}
static void
save_response_cb (GtkNativeDialog *dialog,
gint response,
ConstraintEditorWindow *self)
{
gtk_native_dialog_hide (dialog);
if (response == GTK_RESPONSE_ACCEPT)
{
GListModel *model;
char *text, *filename;
GError *error = NULL;
model = constraint_view_get_model (CONSTRAINT_VIEW (self->view));
text = serialize_model (model);
filename = gtk_file_chooser_get_filename (GTK_FILE_CHOOSER (dialog));
if (!g_file_set_contents (filename, text, -1, &error))
{
GtkWidget *dialog;
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 (dialog),
"%s", error->message);
g_signal_connect (dialog, "response", G_CALLBACK (gtk_widget_destroy), NULL);
gtk_widget_show (dialog);
g_error_free (error);
}
g_free (filename);
}
gtk_native_dialog_destroy (dialog);
}
static void
save_cb (GtkWidget *button,
ConstraintEditorWindow *self)
{
GtkFileChooserNative *dialog;
dialog = gtk_file_chooser_native_new ("Save constraints",
GTK_WINDOW (gtk_widget_get_root (GTK_WIDGET (button))),
GTK_FILE_CHOOSER_ACTION_SAVE,
"_Save",
"_Cancel");
gtk_native_dialog_set_modal (GTK_NATIVE_DIALOG (dialog), TRUE);
gtk_file_chooser_set_current_folder (GTK_FILE_CHOOSER (dialog), ".");
g_signal_connect (dialog, "response", G_CALLBACK (save_response_cb), self);
gtk_native_dialog_show (GTK_NATIVE_DIALOG (dialog));
}
static void
constraint_editor_window_finalize (GObject *object)
{
@ -213,6 +358,8 @@ constraint_editor_window_class_init (ConstraintEditorWindowClass *class)
gtk_widget_class_bind_template_child (widget_class, ConstraintEditorWindow, view);
gtk_widget_class_bind_template_child (widget_class, ConstraintEditorWindow, list);
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, add_child);
gtk_widget_class_bind_template_callback (widget_class, add_guide);
gtk_widget_class_bind_template_callback (widget_class, add_constraint);

14
demos/constraint-editor/constraint-editor-window.ui
View File

@ -11,6 +11,20 @@
<object class="GtkHeaderBar" id="header">
<property name="title" translatable="yes">GTK Constraint Editor</property>
<property name="show-title-buttons">1</property>
<child type="start">
<object class="GtkButton">
<property name="icon-name">document-open-symbolic</property>
<property name="tooltip-text">Open ui file</property>
<signal name="clicked" handler="open_cb"/>
</object>
</child>
<child type="start">
<object class="GtkButton">
<property name="icon-name">document-save-symbolic</property>
<property name="tooltip-text">Save to ui file</property>
<signal name="clicked" handler="save_cb"/>
</object>
</child>
</object>
</child>
<child>

34
demos/constraint-editor/constraint-editor.c
View File

@ -236,6 +236,40 @@ get_strength_nick (GtkConstraintStrength strength)
return nick;
}
void
constraint_editor_serialize_constraint (GString *str,
int indent,
GtkConstraint *constraint)
{
const char *target;
const char *target_attr;
const char *relation;
const char *source;
const char *source_attr;
double multiplier;
double constant;
const char *strength;
target = get_target_name (gtk_constraint_get_target (constraint));
target_attr = get_attr_nick (gtk_constraint_get_target_attribute (constraint));
relation = get_relation_nick (gtk_constraint_get_relation (constraint));
source = get_target_name (gtk_constraint_get_source (constraint));
source_attr = get_attr_nick (gtk_constraint_get_source_attribute (constraint));
multiplier = gtk_constraint_get_multiplier (constraint);
constant = gtk_constraint_get_constant (constraint);
strength = get_strength_nick (gtk_constraint_get_strength (constraint));
g_string_append_printf (str, "%*s<constraint target=\"%s\" target-attribute=\"%s\"\n", indent, "", target, target_attr);
g_string_append_printf (str, "%*s relation=\"%s\"\n", indent, "", relation);
if (strcmp (source_attr, "none") != 0)
{
g_string_append_printf (str, "%*s source=\"%s\" source-attribute=\"%s\"\n", indent, "", source, source_attr);
g_string_append_printf (str, "%*s multiplier=\"%g\"\n", indent, "", multiplier);
}
g_string_append_printf (str, "%*s constant=\"%g\"\n", indent, "", constant);
g_string_append_printf (str, "%*s strength=\"%s\" />\n", indent, "", strength);
}
static void
create_constraint (GtkButton *button,
ConstraintEditor *editor)

4
demos/constraint-editor/constraint-editor.h
View File

@ -27,3 +27,7 @@ G_DECLARE_FINAL_TYPE (ConstraintEditor, constraint_editor, CONSTRAINT, EDITOR, G
ConstraintEditor * constraint_editor_new (GListModel *model,
GtkConstraint *constraint);
void constraint_editor_serialize_constraint (GString *str,
int indent,
GtkConstraint *constraint);

23
demos/constraint-editor/guide-editor.c
View File

@ -89,6 +89,29 @@ get_strength_nick (GtkConstraintStrength strength)
return nick;
}
void
guide_editor_serialize_guide (GString *str,
int indent,
GtkConstraintGuide *guide)
{
int min_width, min_height;
int nat_width, nat_height;
int max_width, max_height;
const char *name;
const char *strength;
gtk_constraint_guide_get_min_size (guide, &min_width, &min_height);
gtk_constraint_guide_get_nat_size (guide, &nat_width, &nat_height);
gtk_constraint_guide_get_max_size (guide, &max_width, &max_height);
name = gtk_constraint_guide_get_name (guide);
strength = get_strength_nick (gtk_constraint_guide_get_strength (guide));
g_string_append_printf (str, "%*s<guide min-width=\"%d\" min-height=\"%d\"\n", indent, "", min_width, min_height);
g_string_append_printf (str, "%*s nat-width=\"%d\" nat-height=\"%d\"\n", indent, "", nat_width, nat_height);
g_string_append_printf (str, "%*s max-width=\"%d\" max-height=\"%d\"\n", indent, "", max_width, max_height);
g_string_append_printf (str, "%*s name=\"%s\" strength=\"%s\" />\n", indent, "", name, strength);
}
static void
create_guide (GtkButton *button,
GuideEditor *editor)

4
demos/constraint-editor/guide-editor.h
View File

@ -26,3 +26,7 @@
G_DECLARE_FINAL_TYPE (GuideEditor, guide_editor, GUIDE, EDITOR, GtkWidget)
GuideEditor * guide_editor_new (GtkConstraintGuide *guide);
void guide_editor_serialize_guide (GString *str,
int indent,
GtkConstraintGuide *guide);