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/*
* Copyright (C) 2012-2025 Robin Haberkorn
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <string.h>
#include <glib.h>
#include <gtk/gtk.h>
#include <Scintilla.h>
#include <ScintillaWidget.h>
#include "view.h"
G_DEFINE_AUTOPTR_CLEANUP_FUNC(ScintillaObject, g_object_unref)
#define TECO_TYPE_VIEW teco_view_get_type()
G_DECLARE_FINAL_TYPE(TecoView, teco_view, TECO, VIEW, ScintillaObject)
struct _TecoView {
ScintillaObject parent_instance;
/** current size allocation */
GdkRectangle allocation;
};
G_DEFINE_TYPE(TecoView, teco_view, SCINTILLA_TYPE_OBJECT)
static void
teco_view_scintilla_notify_cb(ScintillaObject *sci, gint iMessage, SCNotification *notify)
{
teco_view_process_notify((teco_view_t *)TECO_VIEW(sci), notify);
}
/**
* Called when the view is size allocated.
*
* This especially ensures that the caret is visible after startup and when
* opening files on specific lines.
* It's important to scroll the caret only when the size actually changes,
* so we do not interfere with mouse scrolling.
* That callback is invoked even if the size does not change, so that's why
* we have to store the current allocation in teco_view_t.
* Calling it once is unfortunately not sufficient since the window size
* can change during startup.
*/
static void
teco_view_size_allocate_cb(GtkWidget *widget, GdkRectangle *allocation)
{
/* chain to parent class */
GTK_WIDGET_CLASS(teco_view_parent_class)->size_allocate(widget, allocation);
TecoView *view = TECO_VIEW(widget);
if (allocation->width == view->allocation.width && allocation->height == view->allocation.height)
return;
teco_view_ssm((teco_view_t *)view, SCI_SCROLLCARET, 0, 0);
memcpy(&view->allocation, allocation, sizeof(view->allocation));
}
teco_view_t *
teco_view_new(void)
{
TecoView *ctx = TECO_VIEW(g_object_new(TECO_TYPE_VIEW, NULL));
/*
* We don't want the object to be destroyed
* when it is removed from the vbox.
*/
g_object_ref_sink(ctx);
scintilla_set_id(SCINTILLA(ctx), 0);
gtk_widget_set_size_request(GTK_WIDGET(ctx), 500, 300);
/*
* This disables mouse and key events on this view.
* For some strange reason, masking events on
* the event box does NOT work.
*/
gtk_widget_set_can_focus(GTK_WIDGET(ctx), FALSE);
gint events = gtk_widget_get_events(GTK_WIDGET(ctx));
events &= ~(GDK_BUTTON_PRESS_MASK | GDK_BUTTON_RELEASE_MASK |
GDK_SCROLL_MASK |
GDK_KEY_PRESS_MASK | GDK_KEY_RELEASE_MASK);
gtk_widget_set_events(GTK_WIDGET(ctx), events);
return (teco_view_t *)ctx;
}
static void
teco_view_class_init(TecoViewClass *klass)
{
SCINTILLA_CLASS(klass)->notify = teco_view_scintilla_notify_cb;
GTK_WIDGET_CLASS(klass)->size_allocate = teco_view_size_allocate_cb;
}
static void teco_view_init(TecoView *self) {}
sptr_t
teco_view_ssm(teco_view_t *ctx, unsigned int iMessage, uptr_t wParam, sptr_t lParam)
{
return scintilla_send_message(SCINTILLA(ctx), iMessage, wParam, lParam);
}
void
teco_view_free(teco_view_t *ctx)
{
g_object_unref(ctx);
}
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