467 lines
12 KiB
C
467 lines
12 KiB
C
/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4; coding: utf-8 -*-
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*
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* moopaneview.c
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*
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* Copyright (C) 2004-2005 by Yevgen Muntyan <muntyan@math.tamu.edu>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* See COPYING file that comes with this distribution.
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*/
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#include "mooedit/moopaneview.h"
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#include "mooutils/moomarshals.h"
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struct _MooPaneViewPrivate {
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GHashTable *line_data;
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gboolean busy;
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gboolean scrolled;
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GtkTextMark *end_mark;
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};
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typedef struct {
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gpointer data;
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GDestroyNotify free_func;
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} LineData;
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static LineData *line_data_new (gpointer data,
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GDestroyNotify free_func);
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static void line_data_free (LineData *line_data);
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static void moo_pane_view_finalize (GObject *object);
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// static void moo_pane_view_set_property (GObject *object,
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// guint prop_id,
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// const GValue *value,
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// GParamSpec *pspec);
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// static void moo_pane_view_get_property (GObject *object,
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// guint prop_id,
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// GValue *value,
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// GParamSpec *pspec);
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static void moo_pane_view_realize (GtkWidget *widget);
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static gboolean moo_pane_view_button_press (GtkWidget *widget,
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GdkEventButton *event);
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static GtkTextBuffer *get_buffer (MooPaneView *view);
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static GHashTable *get_hash_table (MooPaneView *view);
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enum {
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CLICK,
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LAST_SIGNAL
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};
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static guint signals[LAST_SIGNAL];
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enum {
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PROP_0,
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};
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/* MOO_TYPE_PANE_VIEW */
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G_DEFINE_TYPE (MooPaneView, moo_pane_view, MOO_TYPE_TEXT_VIEW)
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static void moo_pane_view_class_init (MooPaneViewClass *klass)
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{
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GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
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GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
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// gobject_class->set_property = moo_pane_view_set_property;
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// gobject_class->get_property = moo_pane_view_get_property;
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gobject_class->finalize = moo_pane_view_finalize;
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widget_class->realize = moo_pane_view_realize;
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widget_class->button_press_event = moo_pane_view_button_press;
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signals[CLICK] =
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g_signal_new ("click",
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G_OBJECT_CLASS_TYPE (klass),
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G_SIGNAL_RUN_LAST,
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G_STRUCT_OFFSET (MooPaneViewClass, click),
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g_signal_accumulator_true_handled, NULL,
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_moo_marshal_BOOL__POINTER_INT,
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G_TYPE_BOOLEAN, 2,
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G_TYPE_POINTER, G_TYPE_INT);
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}
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static void moo_pane_view_init (MooPaneView *view)
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{
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view->priv = g_new0 (MooPaneViewPrivate, 1);
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g_object_set (view,
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"editable", FALSE,
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"cursor-visible", FALSE,
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"current-line-color", "grey",
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NULL);
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}
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static void moo_pane_view_finalize (GObject *object)
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{
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MooPaneView *view = MOO_PANE_VIEW (object);
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if (view->priv->line_data)
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g_hash_table_destroy (view->priv->line_data);
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g_free (view->priv);
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G_OBJECT_CLASS (moo_pane_view_parent_class)->finalize (object);
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}
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GtkWidget*
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moo_pane_view_new (void)
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{
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return g_object_new (MOO_TYPE_PANE_VIEW, NULL);
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}
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void
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moo_pane_view_clear (MooPaneView *view)
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{
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GtkTextBuffer *buffer;
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GtkTextIter start, end;
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g_return_if_fail (MOO_IS_PANE_VIEW (view));
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buffer = get_buffer (view);
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gtk_text_buffer_get_bounds (buffer, &start, &end);
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gtk_text_buffer_delete (buffer, &start, &end);
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if (view->priv->line_data)
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{
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g_hash_table_destroy (view->priv->line_data);
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view->priv->line_data = NULL;
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}
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}
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static GtkTextBuffer*
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get_buffer (MooPaneView *view)
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{
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return gtk_text_view_get_buffer (GTK_TEXT_VIEW (view));
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}
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static LineData*
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line_data_new (gpointer data,
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GDestroyNotify free_func)
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{
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LineData *line_data;
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g_return_val_if_fail (data != NULL, NULL);
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line_data = g_new (LineData, 1);
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line_data->data = data;
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line_data->free_func = free_func;
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return line_data;
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}
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static void
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line_data_free (LineData *line_data)
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{
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if (line_data)
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{
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if (line_data->data && line_data->free_func)
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line_data->free_func (line_data->data);
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g_free (line_data);
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}
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}
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static GHashTable*
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get_hash_table (MooPaneView *view)
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{
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if (!view->priv->line_data)
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view->priv->line_data =
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g_hash_table_new_full (g_direct_hash, g_direct_equal,
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NULL, (GDestroyNotify) line_data_free);
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return view->priv->line_data;
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}
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static gboolean
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moo_pane_view_button_press (GtkWidget *widget,
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GdkEventButton *event)
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{
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GtkTextView *textview = GTK_TEXT_VIEW (widget);
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MooPaneView *view = MOO_PANE_VIEW (widget);
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int buffer_x, buffer_y, line;
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GtkTextIter iter;
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gpointer data;
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gboolean handled = FALSE;
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if (gtk_text_view_get_window_type (textview, event->window) == GTK_TEXT_WINDOW_TEXT)
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{
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gtk_text_view_window_to_buffer_coords (textview,
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GTK_TEXT_WINDOW_TEXT,
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event->x, event->y,
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&buffer_x, &buffer_y);
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/* XXX */
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gtk_text_view_get_line_at_y (textview, &iter, buffer_y, NULL);
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line = gtk_text_iter_get_line (&iter);
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data = moo_pane_view_get_line_data (view, line);
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g_signal_emit (view, signals[CLICK], 0, data, line, &handled);
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if (handled)
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gtk_text_buffer_place_cursor (get_buffer (view), &iter);
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}
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if (!handled)
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return GTK_WIDGET_CLASS(moo_pane_view_parent_class)->button_press_event (widget, event);
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else
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return TRUE;
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}
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static void
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moo_pane_view_realize (GtkWidget *widget)
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{
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GdkWindow *window;
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GTK_WIDGET_CLASS(moo_pane_view_parent_class)->realize (widget);
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window = gtk_text_view_get_window (GTK_TEXT_VIEW (widget),
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GTK_TEXT_WINDOW_TEXT);
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gdk_window_set_cursor (window, NULL);
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}
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/* XXX check line */
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void
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moo_pane_view_set_line_data (MooPaneView *view,
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int line,
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gpointer data,
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GDestroyNotify free_func)
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{
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g_return_if_fail (MOO_IS_PANE_VIEW (view));
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g_return_if_fail (line >= 0);
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if (data)
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{
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GHashTable *hash = get_hash_table (view);
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g_hash_table_insert (hash, GINT_TO_POINTER (line),
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line_data_new (data, free_func));
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}
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else if (view->priv->line_data)
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{
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g_hash_table_remove (view->priv->line_data, GINT_TO_POINTER (line));
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}
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}
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gpointer
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moo_pane_view_get_line_data (MooPaneView *view,
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int line)
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{
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g_return_val_if_fail (MOO_IS_PANE_VIEW (view), NULL);
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g_return_val_if_fail (line >= 0, NULL);
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if (!view->priv->line_data)
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{
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return NULL;
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}
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else
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{
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LineData *line_data =
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g_hash_table_lookup (view->priv->line_data,
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GINT_TO_POINTER (line));
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return line_data ? line_data->data : NULL;
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}
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}
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GtkTextTag*
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moo_pane_view_create_tag (MooPaneView *view,
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const char *tag_name,
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const char *first_property_name,
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...)
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{
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GtkTextTag *tag;
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GtkTextBuffer *buffer;
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va_list list;
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g_return_val_if_fail (MOO_IS_PANE_VIEW (view), NULL);
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buffer = get_buffer (view);
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tag = gtk_text_buffer_create_tag (buffer, tag_name, NULL);
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g_return_val_if_fail (tag != NULL, NULL);
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if (first_property_name)
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{
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va_start (list, first_property_name);
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g_object_set_valist (G_OBJECT (tag), first_property_name, list);
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va_end (list);
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}
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return tag;
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}
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GtkTextTag*
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moo_pane_view_lookup_tag (MooPaneView *view,
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const char *tag_name)
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{
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GtkTextTagTable *table;
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GtkTextBuffer *buffer;
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g_return_val_if_fail (MOO_IS_PANE_VIEW (view), NULL);
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g_return_val_if_fail (tag_name != NULL, NULL);
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buffer = get_buffer (view);
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table = gtk_text_buffer_get_tag_table (buffer);
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return gtk_text_tag_table_lookup (table, tag_name);
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}
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int
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moo_pane_view_write_line (MooPaneView *view,
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const char *text,
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gssize len,
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GtkTextTag *tag)
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{
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int line;
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g_return_val_if_fail (MOO_IS_PANE_VIEW (view), -1);
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g_return_val_if_fail (text != NULL, -1);
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line = moo_pane_view_start_line (view);
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g_return_val_if_fail (line >= 0, -1);
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moo_pane_view_write (view, text, len, tag);
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moo_pane_view_end_line (view);
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return line;
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}
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static void
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check_if_scrolled (MooPaneView *view)
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{
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GdkWindow *text_window;
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GdkRectangle rect;
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GtkTextIter iter;
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int line;
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if (!GTK_WIDGET_REALIZED (view))
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{
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view->priv->scrolled = FALSE;
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return;
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}
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text_window = gtk_text_view_get_window (GTK_TEXT_VIEW (view),
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GTK_TEXT_WINDOW_TEXT);
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gtk_text_view_get_visible_rect (GTK_TEXT_VIEW (view), &rect);
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gtk_text_view_get_line_at_y (GTK_TEXT_VIEW (view), &iter,
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rect.y + rect.height - 1, NULL);
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line = gtk_text_iter_get_line (&iter);
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if (line + 1 < gtk_text_buffer_get_line_count (get_buffer (view)))
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view->priv->scrolled = TRUE;
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else
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view->priv->scrolled = FALSE;
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}
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int
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moo_pane_view_start_line (MooPaneView *view)
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{
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GtkTextBuffer *buffer;
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GtkTextIter iter;
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g_return_val_if_fail (MOO_IS_PANE_VIEW (view), -1);
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g_return_val_if_fail (!view->priv->busy, -1);
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view->priv->busy = TRUE;
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buffer = get_buffer (view);
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gtk_text_buffer_get_end_iter (buffer, &iter);
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check_if_scrolled (view);
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if (!gtk_text_iter_starts_line (&iter))
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gtk_text_buffer_insert (buffer, &iter, "\n", 1);
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return gtk_text_iter_get_line (&iter);
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}
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void
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moo_pane_view_write (MooPaneView *view,
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const char *text,
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gssize len,
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GtkTextTag *tag)
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{
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GtkTextBuffer *buffer;
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GtkTextIter iter;
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g_return_if_fail (MOO_IS_PANE_VIEW (view));
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g_return_if_fail (text != NULL);
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g_return_if_fail (view->priv->busy);
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buffer = get_buffer (view);
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gtk_text_buffer_get_end_iter (buffer, &iter);
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if (g_utf8_validate (text, len, NULL))
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{
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gtk_text_buffer_insert_with_tags (buffer, &iter, text, len, tag, NULL);
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}
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else
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{
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char *text_utf8 = g_locale_to_utf8 (text, len, NULL, NULL, NULL);
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if (text_utf8)
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gtk_text_buffer_insert_with_tags (buffer, &iter, text_utf8, -1, tag, NULL);
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else
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g_warning ("%s: could not convert '%s' to utf8",
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G_STRLOC, text);
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g_free (text_utf8);
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}
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}
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static GtkTextMark*
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get_end_mark (MooPaneView *view)
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{
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if (!view->priv->end_mark)
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{
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GtkTextIter end;
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GtkTextBuffer *buffer = get_buffer (view);
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gtk_text_buffer_get_end_iter (buffer, &end);
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view->priv->end_mark =
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gtk_text_buffer_create_mark (buffer, NULL, &end, FALSE);
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}
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return view->priv->end_mark;
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}
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void
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moo_pane_view_end_line (MooPaneView *view)
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{
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g_return_if_fail (MOO_IS_PANE_VIEW (view));
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g_return_if_fail (view->priv->busy);
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view->priv->busy = FALSE;
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if (!view->priv->scrolled)
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gtk_text_view_scroll_mark_onscreen (GTK_TEXT_VIEW (view),
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get_end_mark (view));
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}
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