diff options
Diffstat (limited to 'lib/gtk-experiment-widgets/gtk-experiment-transcript.c')
| -rw-r--r-- | lib/gtk-experiment-widgets/gtk-experiment-transcript.c | 1082 |
1 files changed, 0 insertions, 1082 deletions
diff --git a/lib/gtk-experiment-widgets/gtk-experiment-transcript.c b/lib/gtk-experiment-widgets/gtk-experiment-transcript.c deleted file mode 100644 index 093b608..0000000 --- a/lib/gtk-experiment-widgets/gtk-experiment-transcript.c +++ /dev/null @@ -1,1082 +0,0 @@ -/** - * @file - * GTK widget, extending a \e GtkWidget, for displaying an experiment's - * transcript. - */ - -/* - * Copyright (C) 2012-2013 Otto-von-Guericke-Universität Magdeburg - * - * 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 <assert.h> - -#include <glib.h> -#include <glib/gprintf.h> - -#include <gdk/gdk.h> -#include <gtk/gtk.h> - -#include <experiment-reader.h> - -#include "gtk-experiment-transcript.h" -#include "gtk-experiment-transcript-private.h" - -static void gtk_experiment_transcript_class_init(GtkExperimentTranscriptClass *klass); -static void gtk_experiment_transcript_init(GtkExperimentTranscript *klass); - -static void gtk_experiment_transcript_realize(GtkWidget *widget); -static void gtk_experiment_transcript_size_allocate(GtkWidget *widget, - GtkAllocation *allocation); -static gboolean gtk_experiment_transcript_expose(GtkWidget *widget, - GdkEventExpose *event); - -static void gtk_experiment_transcript_dispose(GObject *gobject); -static void gtk_experiment_transcript_finalize(GObject *gobject); - -static void time_adj_on_value_changed(GtkAdjustment *adj, gpointer user_data); - -static void gtk_experiment_transcript_reconfigure(GtkExperimentTranscript *trans); - -static gboolean configure_text_layout(GtkExperimentTranscript *trans, - ExperimentReaderContrib *contrib, - gint64 current_time, - gint y, gint last_contrib_y, - int *logical_height); -static gboolean render_contribution_bottomup(GtkExperimentTranscript *trans, - ExperimentReaderContrib *contrib, - gint64 current_time, gint64 current_time_px, - gint *last_contrib_y); -static gboolean render_contribution_topdown(GtkExperimentTranscript *trans, - ExperimentReaderContrib *contrib, - gint64 current_time, gint64 current_time_px, - gint *last_contrib_y); -static inline void render_backdrop_area(GtkExperimentTranscript *trans, - gint64 current_time_px); - -static void state_changed(GtkWidget *widget, GtkStateType state); -static gboolean button_pressed(GtkWidget *widget, GdkEventButton *event); -static gboolean scrolled(GtkWidget *widget, GdkEventScroll *event); - -static void choose_font_activated(GtkWidget *widget, gpointer data); -static void choose_text_color_activated(GtkWidget *widget, gpointer data); -static void choose_bg_color_activated(GtkWidget *widget, gpointer data); -static void text_alignment_activated(GtkWidget *widget, gpointer data); - -static void reverse_activated(GtkWidget *widget, gpointer data); - -/** @private */ -GQuark -gtk_experiment_transcript_error_quark(void) -{ - return g_quark_from_static_string("gtk-experiment-transcript-error-quark"); -} - -/** - * @private - * Will create \e gtk_experiment_transcript_get_type and set - * \e gtk_experiment_transcript_parent_class - */ -G_DEFINE_TYPE(GtkExperimentTranscript, gtk_experiment_transcript, GTK_TYPE_WIDGET); - -static void -gtk_experiment_transcript_class_init(GtkExperimentTranscriptClass *klass) -{ - GObjectClass *gobject_class = G_OBJECT_CLASS(klass); - GtkWidgetClass *widget_class = GTK_WIDGET_CLASS(klass); - - gobject_class->dispose = gtk_experiment_transcript_dispose; - gobject_class->finalize = gtk_experiment_transcript_finalize; - - widget_class->realize = gtk_experiment_transcript_realize; - widget_class->expose_event = gtk_experiment_transcript_expose; - widget_class->size_allocate = gtk_experiment_transcript_size_allocate; - - widget_class->state_changed = state_changed; - widget_class->button_press_event = button_pressed; - widget_class->scroll_event = scrolled; - - g_type_class_add_private(klass, sizeof(GtkExperimentTranscriptPrivate)); -} - -/** - * @brief Instance initializer function for the \e GtkExperimentTranscript widget - * - * @param klass Newly constructed \e GtkExperimentTranscript instance - */ -static void -gtk_experiment_transcript_init(GtkExperimentTranscript *klass) -{ - GtkWidget *item, *submenu, *image; - - klass->priv = GTK_EXPERIMENT_TRANSCRIPT_GET_PRIVATE(klass); - - klass->speaker = NULL; - - klass->interactive_format.default_font = NULL; - klass->interactive_format.default_text_color = NULL; - klass->interactive_format.default_bg_color = NULL; - - klass->priv->flag_mask = 0; - - klass->priv->time_adjustment = gtk_adjustment_new(0., 0., 0., - 0., 0., 0.); - g_object_ref_sink(klass->priv->time_adjustment); - klass->priv->time_adj_on_value_changed_id = - g_signal_connect(G_OBJECT(klass->priv->time_adjustment), - "value-changed", - G_CALLBACK(time_adj_on_value_changed), klass); - - klass->priv->layer_text = NULL; - klass->priv->layer_text_layout = - gtk_widget_create_pango_layout(GTK_WIDGET(klass), NULL); - pango_layout_set_wrap(klass->priv->layer_text_layout, PANGO_WRAP_WORD_CHAR); - pango_layout_set_ellipsize(klass->priv->layer_text_layout, PANGO_ELLIPSIZE_END); - - klass->priv->backdrop.start = 0; - klass->priv->backdrop.end = 0; - - klass->priv->contribs = NULL; - klass->priv->formats = NULL; - klass->priv->interactive_format.regexp = NULL; - klass->priv->interactive_format.attribs = NULL; - - /** @todo It should be possible to reset font and colors (to widget defaults) */ - klass->priv->menu = gtk_menu_new(); - gtk_menu_attach_to_widget(GTK_MENU(klass->priv->menu), - GTK_WIDGET(klass), NULL); - - item = gtk_image_menu_item_new_with_mnemonic("Choose _Font..."); - image = gtk_image_new_from_stock(GTK_STOCK_SELECT_FONT, - GTK_ICON_SIZE_MENU); - gtk_image_menu_item_set_image(GTK_IMAGE_MENU_ITEM(item), image); - g_signal_connect(item, "activate", - G_CALLBACK(choose_font_activated), klass); - gtk_menu_shell_append(GTK_MENU_SHELL(klass->priv->menu), item); - gtk_widget_show(item); - - item = gtk_image_menu_item_new_with_mnemonic("Choose _Text Color..."); - image = gtk_image_new_from_stock(GTK_STOCK_SELECT_COLOR, - GTK_ICON_SIZE_MENU); - gtk_image_menu_item_set_image(GTK_IMAGE_MENU_ITEM(item), image); - g_signal_connect(item, "activate", - G_CALLBACK(choose_text_color_activated), klass); - gtk_menu_shell_append(GTK_MENU_SHELL(klass->priv->menu), item); - gtk_widget_show(item); - - item = gtk_image_menu_item_new_with_mnemonic("Choose _Background Color..."); - image = gtk_image_new_from_stock(GTK_STOCK_SELECT_COLOR, - GTK_ICON_SIZE_MENU); - gtk_image_menu_item_set_image(GTK_IMAGE_MENU_ITEM(item), image); - g_signal_connect(item, "activate", - G_CALLBACK(choose_bg_color_activated), klass); - gtk_menu_shell_append(GTK_MENU_SHELL(klass->priv->menu), item); - gtk_widget_show(item); - - submenu = gtk_menu_new(); - item = gtk_menu_item_new_with_label("Text Alignment"); - gtk_menu_item_set_submenu(GTK_MENU_ITEM(item), submenu); - gtk_menu_shell_append(GTK_MENU_SHELL(klass->priv->menu), item); - gtk_widget_show(item); - - /* - * position in alignment_group list corresponds with PangoAlignment - * (PANGO_ALIGN_RIGHT, PANGO_ALIGN_CENTER, PANGO_ALIGN_LEFT) - */ - item = gtk_radio_menu_item_new_with_mnemonic(NULL, "_Left"); - klass->priv->alignment_group = - gtk_radio_menu_item_get_group(GTK_RADIO_MENU_ITEM(item)); - g_signal_connect(item, "activate", - G_CALLBACK(text_alignment_activated), klass); - gtk_menu_shell_append(GTK_MENU_SHELL(submenu), item); - - item = gtk_radio_menu_item_new_with_mnemonic(klass->priv->alignment_group, - "_Center"); - klass->priv->alignment_group = - gtk_radio_menu_item_get_group(GTK_RADIO_MENU_ITEM(item)); - g_signal_connect(item, "activate", - G_CALLBACK(text_alignment_activated), klass); - gtk_menu_shell_append(GTK_MENU_SHELL(submenu), item); - - item = gtk_radio_menu_item_new_with_mnemonic(klass->priv->alignment_group, - "_Right"); - klass->priv->alignment_group = - gtk_radio_menu_item_get_group(GTK_RADIO_MENU_ITEM(item)); - g_signal_connect(item, "activate", - G_CALLBACK(text_alignment_activated), klass); - gtk_menu_shell_append(GTK_MENU_SHELL(submenu), item); - - gtk_widget_show_all(submenu); - gtk_experiment_transcript_set_alignment(klass, PANGO_ALIGN_LEFT); - - item = gtk_separator_menu_item_new(); - gtk_menu_shell_append(GTK_MENU_SHELL(klass->priv->menu), item); - gtk_widget_show(item); - - klass->priv->menu_reverse_item = - gtk_check_menu_item_new_with_mnemonic("_Reverse"); - g_signal_connect(klass->priv->menu_reverse_item, "activate", - G_CALLBACK(reverse_activated), klass); - gtk_menu_shell_append(GTK_MENU_SHELL(klass->priv->menu), - klass->priv->menu_reverse_item); - gtk_widget_show(klass->priv->menu_reverse_item); - - gtk_widget_set_can_focus(GTK_WIDGET(klass), TRUE); -} - -/** - * @brief Instance disposal function - * - * Its purpose is to unreference \e GObjects - * the instance keeps references to (object pointers saved in the - * instance attributes). - * Keep in mind that this function may be called more than once, so - * you must guard against unreferencing an object more than once (since you - * will only own a single reference). - * Also keep in mind that instance methods may be invoked \b after the instance - * disposal function was executed but \b before instance finalization. This - * case has to be handled gracefully in the instance methods. - * - * @sa GOBJECT_UNREF_SAFE - * @sa gtk_experiment_transcript_finalize - * @sa gtk_experiment_transcript_init - * - * @param gobject \e GObject to dispose - */ -static void -gtk_experiment_transcript_dispose(GObject *gobject) -{ - GtkExperimentTranscript *trans = GTK_EXPERIMENT_TRANSCRIPT(gobject); - - /* - * destroy might be called more than once, but we have only one - * reference for each object - */ - if (trans->priv->time_adjustment != NULL) { - g_signal_handler_disconnect(G_OBJECT(trans->priv->time_adjustment), - trans->priv->time_adj_on_value_changed_id); - g_object_unref(trans->priv->time_adjustment); - trans->priv->time_adjustment = NULL; - } - GOBJECT_UNREF_SAFE(trans->priv->layer_text); - GOBJECT_UNREF_SAFE(trans->priv->layer_text_layout); - - /* Chain up to the parent class */ - G_OBJECT_CLASS(gtk_experiment_transcript_parent_class)->dispose(gobject); -} - -/** - * @brief Instance finalization function - * - * Its purpose is to free all remaining allocated memory referenced - * in public and private instance attributes (e.g. a string). - * For freeing (unreferencing) objects, - * use \ref gtk_experiment_transcript_dispose. - * - * @sa gtk_experiment_transcript_dispose - * @sa gtk_experiment_transcript_init - * - * @param gobject \e GObject to finalize - */ -static void -gtk_experiment_transcript_finalize(GObject *gobject) -{ - GtkExperimentTranscript *trans = GTK_EXPERIMENT_TRANSCRIPT(gobject); - - g_free(trans->speaker); - - if (trans->interactive_format.default_font != NULL) - pango_font_description_free(trans->interactive_format.default_font); - if (trans->interactive_format.default_text_color != NULL) - gdk_color_free(trans->interactive_format.default_text_color); - if (trans->interactive_format.default_bg_color != NULL) - gdk_color_free(trans->interactive_format.default_bg_color); - - experiment_reader_free_contributions(trans->priv->contribs); - gtk_experiment_transcript_free_formats(trans->priv->formats); - gtk_experiment_transcript_free_format(&trans->priv->interactive_format); - - /* Chain up to the parent class */ - G_OBJECT_CLASS(gtk_experiment_transcript_parent_class)->finalize(gobject); -} - -static void -gtk_experiment_transcript_realize(GtkWidget *widget) -{ - GdkWindowAttr attributes; - gint attributes_mask; - - gtk_widget_set_realized(widget, TRUE); - - attributes.x = widget->allocation.x; - attributes.y = widget->allocation.y; - attributes.width = widget->allocation.width; - attributes.height = widget->allocation.height; - attributes.wclass = GDK_INPUT_OUTPUT; - attributes.window_type = GDK_WINDOW_CHILD; - attributes.event_mask = gtk_widget_get_events(widget) - | GDK_EXPOSURE_MASK | GDK_BUTTON_PRESS_MASK; - attributes.visual = gtk_widget_get_visual(widget); - attributes.colormap = gtk_widget_get_colormap(widget); - - gtk_widget_set_has_window(widget, TRUE); - - attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP; - widget->window = gdk_window_new(gtk_widget_get_parent_window(widget), - &attributes, attributes_mask); - - widget->style = gtk_style_attach(widget->style, widget->window); - - gdk_window_set_user_data(widget->window, widget); - - gtk_style_set_background(widget->style, widget->window, GTK_STATE_ACTIVE); - - gtk_experiment_transcript_reconfigure(GTK_EXPERIMENT_TRANSCRIPT(widget)); -} - -static void -gtk_experiment_transcript_size_allocate(GtkWidget *widget, - GtkAllocation *allocation) -{ - GtkExperimentTranscript *trans = GTK_EXPERIMENT_TRANSCRIPT(widget); - gboolean sizeChanged = widget->allocation.width != allocation->width || - widget->allocation.height != allocation->height; - - gtk_widget_set_allocation(widget, allocation); - - if (gtk_widget_get_realized(widget)) { - gdk_window_move_resize(gtk_widget_get_window(widget), - allocation->x, allocation->y, - allocation->width, allocation->height); - - if (sizeChanged || trans->priv->layer_text == NULL) - gtk_experiment_transcript_reconfigure(trans); - } -} - -static gboolean -gtk_experiment_transcript_expose(GtkWidget *widget, GdkEventExpose *event) -{ - GtkExperimentTranscript *trans = GTK_EXPERIMENT_TRANSCRIPT(widget); - - gdk_draw_drawable(GDK_DRAWABLE(gtk_widget_get_window(widget)), - widget->style->fg_gc[gtk_widget_get_state(widget)], - GDK_DRAWABLE(trans->priv->layer_text), - event->area.x, event->area.y, - event->area.x, event->area.y, - event->area.width, event->area.height); - - return FALSE; -} - -static void -time_adj_on_value_changed(GtkAdjustment *adj, gpointer user_data) -{ - GtkExperimentTranscript *trans = GTK_EXPERIMENT_TRANSCRIPT(user_data); - - /** - * @todo - * heuristic to improve performance in the common case of advancing - * time in small steps - */ - gtk_experiment_transcript_text_layer_redraw(trans); -} - -static void -gtk_experiment_transcript_reconfigure(GtkExperimentTranscript *trans) -{ - GtkWidget *widget = GTK_WIDGET(trans); - - gtk_adjustment_set_page_size(GTK_ADJUSTMENT(trans->priv->time_adjustment), - (gdouble)PX_TO_TIME(widget->allocation.height)); - - GOBJECT_UNREF_SAFE(trans->priv->layer_text); - trans->priv->layer_text = gdk_pixmap_new(gtk_widget_get_window(widget), - widget->allocation.width, - widget->allocation.height, - -1); - pango_layout_set_width(trans->priv->layer_text_layout, - widget->allocation.width*PANGO_SCALE); - - gtk_experiment_transcript_text_layer_redraw(trans); -} - -static gboolean -configure_text_layout(GtkExperimentTranscript *trans, - ExperimentReaderContrib *contrib, - gint64 current_time, - gint y, gint last_contrib_y, - int *logical_height) -{ - PangoAttrList *attrib_list; - - if (contrib->start_time > current_time) - return FALSE; - - attrib_list = pango_attr_list_new(); - - for (GSList *cur = trans->priv->formats; cur != NULL; cur = cur->next) { - GtkExperimentTranscriptFormat *fmt = - (GtkExperimentTranscriptFormat *)cur->data; - - gtk_experiment_transcript_apply_format(fmt, contrib->text, - attrib_list); - } - gtk_experiment_transcript_apply_format(&trans->priv->interactive_format, - contrib->text, attrib_list); - - pango_layout_set_attributes(trans->priv->layer_text_layout, - attrib_list); - pango_attr_list_unref(attrib_list); - - pango_layout_set_text(trans->priv->layer_text_layout, - contrib->text, -1); - - pango_layout_set_height(trans->priv->layer_text_layout, - last_contrib_y == -1 - ? G_MAXINT - : ABS(last_contrib_y - y)*PANGO_SCALE); - - pango_layout_get_pixel_size(trans->priv->layer_text_layout, - NULL, logical_height); - - return TRUE; -} - -static gboolean -render_contribution_bottomup(GtkExperimentTranscript *trans, - ExperimentReaderContrib *contrib, - gint64 current_time, gint64 current_time_px, - gint *last_contrib_y) -{ - GtkWidget *widget = GTK_WIDGET(trans); - - gint old_last_contrib_y = *last_contrib_y; - int logical_height; - - *last_contrib_y = widget->allocation.height - - (current_time_px - TIME_TO_PX(contrib->start_time)); - - if (!configure_text_layout(trans, contrib, current_time, - *last_contrib_y, old_last_contrib_y, - &logical_height)) - return TRUE; - - if (*last_contrib_y + logical_height < 0) - return FALSE; - - gdk_draw_layout(GDK_DRAWABLE(trans->priv->layer_text), - widget->style->text_gc[gtk_widget_get_state(widget)], - 0, *last_contrib_y, - trans->priv->layer_text_layout); - - return *last_contrib_y > 0; -} - -static gboolean -render_contribution_topdown(GtkExperimentTranscript *trans, - ExperimentReaderContrib *contrib, - gint64 current_time, gint64 current_time_px, - gint *last_contrib_y) -{ - GtkWidget *widget = GTK_WIDGET(trans); - - gint old_last_contrib_y = *last_contrib_y; - int logical_height; - - *last_contrib_y = current_time_px - TIME_TO_PX(contrib->start_time); - - if (!configure_text_layout(trans, contrib, current_time, - *last_contrib_y, old_last_contrib_y, - &logical_height)) - return TRUE; - - if (*last_contrib_y - logical_height > widget->allocation.height) - return FALSE; - - gdk_draw_layout(GDK_DRAWABLE(trans->priv->layer_text), - widget->style->text_gc[gtk_widget_get_state(widget)], - 0, *last_contrib_y - logical_height, - trans->priv->layer_text_layout); - - return *last_contrib_y < widget->allocation.height; -} - -static inline void -render_backdrop_area(GtkExperimentTranscript *trans, gint64 current_time_px) -{ - GtkWidget *widget = GTK_WIDGET(trans); - - gint y_start, y_end; - GdkColor color; - GdkColor *bg = &widget->style->bg[gtk_widget_get_state(widget)]; - - if (!gtk_experiment_transcript_get_use_backdrop_area(trans)) - return; - - if (gtk_experiment_transcript_get_reverse_mode(trans)) { - y_end = current_time_px - TIME_TO_PX(trans->priv->backdrop.start); - y_start = current_time_px - TIME_TO_PX(trans->priv->backdrop.end); - } else { - y_start = widget->allocation.height - - (current_time_px - TIME_TO_PX(trans->priv->backdrop.start)); - y_end = widget->allocation.height - - (current_time_px - TIME_TO_PX(trans->priv->backdrop.end)); - } - - if ((y_start < 0 && y_end < 0) || - (y_start > widget->allocation.height && - y_end > widget->allocation.height)) - return; - - y_start = CLAMP(y_start, 0, widget->allocation.height); - y_end = CLAMP(y_end, 0, widget->allocation.height); - - color.pixel = 0; - color.red = MAX((gint)bg->red - BACKDROP_VALUE, 0); - color.blue = MAX((gint)bg->blue - BACKDROP_VALUE, 0); - color.green = MAX((gint)bg->green - BACKDROP_VALUE, 0); - if (!color.red && !color.blue && !color.green) { - color.red = MIN((gint)bg->red + BACKDROP_VALUE, G_MAXUINT16); - color.blue = MIN((gint)bg->blue + BACKDROP_VALUE, G_MAXUINT16); - color.green = MIN((gint)bg->green + BACKDROP_VALUE, G_MAXUINT16); - } - gtk_widget_modify_fg(widget, gtk_widget_get_state(widget), &color); - - gdk_draw_rectangle(GDK_DRAWABLE(trans->priv->layer_text), - widget->style->fg_gc[gtk_widget_get_state(widget)], - TRUE, - 0, y_start, - widget->allocation.width, y_end - y_start); -} - -/** @private */ -G_GNUC_INTERNAL void -gtk_experiment_transcript_text_layer_redraw(GtkExperimentTranscript *trans) -{ - GtkWidget *widget = GTK_WIDGET(trans); - - gint64 current_time = 0, current_time_px; - gint last_contrib_y = -1; - - GtkExperimentTranscriptContribRenderer renderer; - - if (trans->priv->time_adjustment != NULL) { - GtkAdjustment *adj = - GTK_ADJUSTMENT(trans->priv->time_adjustment); - current_time = (gint64)gtk_adjustment_get_value(adj); - } - current_time_px = TIME_TO_PX(current_time); - - gdk_draw_rectangle(GDK_DRAWABLE(trans->priv->layer_text), - widget->style->bg_gc[gtk_widget_get_state(widget)], - TRUE, - 0, 0, - widget->allocation.width, - widget->allocation.height); - - render_backdrop_area(trans, current_time_px); - - gtk_widget_queue_draw_area(widget, 0, 0, - widget->allocation.width, - widget->allocation.height); - - if (trans->priv->contribs == NULL) - return; - - renderer = gtk_experiment_transcript_get_reverse_mode(trans) - ? render_contribution_topdown - : render_contribution_bottomup; - - for (GList *cur = experiment_reader_get_contribution_by_time( - trans->priv->contribs, - current_time); - cur != NULL; - cur = cur->prev) { - ExperimentReaderContrib *contrib = (ExperimentReaderContrib *) - cur->data; - - if (!renderer(trans, contrib, current_time, current_time_px, - &last_contrib_y)) - break; - } -} - -static void -state_changed(GtkWidget *widget, GtkStateType state __attribute__((unused))) -{ - GtkExperimentTranscript *trans = GTK_EXPERIMENT_TRANSCRIPT(widget); - - if (gtk_widget_get_realized(widget) && - trans->priv->layer_text != NULL) - gtk_experiment_transcript_text_layer_redraw(trans); -} - -static gboolean -button_pressed(GtkWidget *widget, GdkEventButton *event) -{ - GtkExperimentTranscript *trans = GTK_EXPERIMENT_TRANSCRIPT(widget); - - gtk_widget_grab_focus(widget); - - /* Ignore double-clicks and triple-clicks */ - if (event->button != 3 || event->type != GDK_BUTTON_PRESS) - return FALSE; - - gtk_menu_popup(GTK_MENU(trans->priv->menu), NULL, NULL, NULL, NULL, - event->button, event->time); - return TRUE; -} - -static gboolean -scrolled(GtkWidget *widget, GdkEventScroll *event) -{ - GtkExperimentTranscript *trans = GTK_EXPERIMENT_TRANSCRIPT(widget); - - GtkAdjustment *adj; - gdouble value, real_upper; - - if (trans->priv->time_adjustment == NULL) - return FALSE; - - adj = GTK_ADJUSTMENT(trans->priv->time_adjustment); - value = gtk_adjustment_get_value(adj); - real_upper = gtk_adjustment_get_upper(adj) - - gtk_adjustment_get_page_size(adj); - - switch (event->direction) { - case GDK_SCROLL_UP: - value -= gtk_adjustment_get_step_increment(adj); - break; - case GDK_SCROLL_DOWN: - value += gtk_adjustment_get_step_increment(adj); - default: - break; - } - - gtk_adjustment_set_value(adj, MIN(value, real_upper)); - - return TRUE; -} - -static void -choose_font_activated(GtkWidget *widget __attribute__((unused)), - gpointer data) -{ - GtkExperimentTranscript *trans = GTK_EXPERIMENT_TRANSCRIPT(data); - - GtkWidget *dialog; - gchar *font_name; - - dialog = gtk_font_selection_dialog_new("Choose Font..."); - - font_name = pango_font_description_to_string(GTK_WIDGET(trans)->style->font_desc); - gtk_font_selection_dialog_set_font_name(GTK_FONT_SELECTION_DIALOG(dialog), - font_name); - g_free(font_name); - - if (gtk_dialog_run(GTK_DIALOG(dialog)) == GTK_RESPONSE_OK) { - PangoFontDescription *font_desc; - - font_name = gtk_font_selection_dialog_get_font_name(GTK_FONT_SELECTION_DIALOG(dialog)); - font_desc = pango_font_description_from_string(font_name); - - gtk_widget_modify_font(GTK_WIDGET(trans), font_desc); - - pango_font_description_free(font_desc); - g_free(font_name); - - gtk_experiment_transcript_text_layer_redraw(trans); - } - - gtk_widget_destroy(dialog); -} - -static void -choose_text_color_activated(GtkWidget *widget __attribute__((unused)), - gpointer data) -{ - GtkExperimentTranscript *trans = GTK_EXPERIMENT_TRANSCRIPT(data); - - GtkWidget *dialog, *colorsel; - - dialog = gtk_color_selection_dialog_new("Choose Text Color..."); - colorsel = gtk_color_selection_dialog_get_color_selection(GTK_COLOR_SELECTION_DIALOG(dialog)); - - gtk_color_selection_set_current_color(GTK_COLOR_SELECTION(colorsel), - >K_WIDGET(trans)->style->text[GTK_STATE_NORMAL]); - - if (gtk_dialog_run(GTK_DIALOG(dialog)) == GTK_RESPONSE_OK) { - GdkColor color; - - gtk_color_selection_get_current_color(GTK_COLOR_SELECTION(colorsel), - &color); - gtk_widget_modify_text(GTK_WIDGET(trans), - GTK_STATE_NORMAL, &color); - - gtk_experiment_transcript_text_layer_redraw(trans); - } - - gtk_widget_destroy(dialog); -} - -static void -choose_bg_color_activated(GtkWidget *widget __attribute__((unused)), - gpointer data) -{ - GtkExperimentTranscript *trans = GTK_EXPERIMENT_TRANSCRIPT(data); - - GtkWidget *dialog, *colorsel; - - dialog = gtk_color_selection_dialog_new("Choose Background Color..."); - colorsel = gtk_color_selection_dialog_get_color_selection(GTK_COLOR_SELECTION_DIALOG(dialog)); - - gtk_color_selection_set_current_color(GTK_COLOR_SELECTION(colorsel), - >K_WIDGET(trans)->style->bg[GTK_STATE_NORMAL]); - - if (gtk_dialog_run(GTK_DIALOG(dialog)) == GTK_RESPONSE_OK) { - GdkColor color; - - gtk_color_selection_get_current_color(GTK_COLOR_SELECTION(colorsel), - &color); - gtk_widget_modify_bg(GTK_WIDGET(trans), - GTK_STATE_NORMAL, &color); - - gtk_experiment_transcript_text_layer_redraw(trans); - } - - gtk_widget_destroy(dialog); -} - -static void -text_alignment_activated(GtkWidget *widget __attribute__((unused)), - gpointer data) -{ - GtkExperimentTranscript *trans = GTK_EXPERIMENT_TRANSCRIPT(data); - PangoAlignment alignment; - - if (trans->priv->layer_text_layout == NULL) - return; - - alignment = PANGO_ALIGN_RIGHT; - for (GSList *cur = trans->priv->alignment_group; - cur != NULL; - cur = cur->next, alignment--) { - if (!gtk_check_menu_item_get_active(GTK_CHECK_MENU_ITEM(cur->data))) - continue; - - pango_layout_set_alignment(trans->priv->layer_text_layout, - alignment); - - if (gtk_widget_get_realized(GTK_WIDGET(trans)) && - trans->priv->layer_text != NULL) - gtk_experiment_transcript_text_layer_redraw(trans); - - break; - } -} - -static void -reverse_activated(GtkWidget *widget, gpointer data) -{ - GtkExperimentTranscript *trans = GTK_EXPERIMENT_TRANSCRIPT(data); - - trans->priv->flag_mask &= ~GTK_EXPERIMENT_TRANSCRIPT_REVERSE_MASK; - if (gtk_check_menu_item_get_active(GTK_CHECK_MENU_ITEM(widget))) - trans->priv->flag_mask |= GTK_EXPERIMENT_TRANSCRIPT_REVERSE_MASK; - - if (gtk_widget_get_realized(GTK_WIDGET(trans)) && - trans->priv->layer_text != NULL) - gtk_experiment_transcript_text_layer_redraw(trans); -} - -/* - * API - */ - -/** - * @brief Construct new \e GtkExperimentTranscript widget instance. - * - * @param speaker Name of speaker whose contributions are displayed - * @return New \e GtkExperimentTranscript widget instance - */ -GtkWidget * -gtk_experiment_transcript_new(const gchar *speaker) -{ - GtkExperimentTranscript *trans; - - trans = GTK_EXPERIMENT_TRANSCRIPT(g_object_new(GTK_TYPE_EXPERIMENT_TRANSCRIPT, NULL)); - trans->speaker = g_strdup(speaker); - if (trans->speaker == NULL) { - gtk_widget_destroy(GTK_WIDGET(trans)); - return NULL; - } - - return GTK_WIDGET(trans); -} - -/** - * @brief Load contributions from an experiment transcript file. - * - * The transcript file is given as an \e ExperimentReader object instance. - * Only contributions (every text fragment identified by a timepoint) of the - * configured speaker are used. - * - * @param trans Widget instance - * @param exp \e ExperimentReader instance - * @return \c TRUE on success, else \c FALSE - */ -gboolean -gtk_experiment_transcript_load(GtkExperimentTranscript *trans, - ExperimentReader *exp) -{ - experiment_reader_free_contributions(trans->priv->contribs); - trans->priv->contribs = - experiment_reader_get_contributions_by_speaker(exp, trans->speaker); - - gtk_experiment_transcript_text_layer_redraw(trans); - - return trans->priv->contribs != NULL; -} - -/** - * @brief Load contributions from an experiment transcript file. - * - * The transcript file is given as a file name. - * Only contributions (every text fragment identified by a timepoint) of the - * configured speaker are used. - * - * @sa gtk_experiment_transcript_load - * - * @param trans Widget instance - * @param filename \e ExperimentReader instance - * @return \c TRUE on success, else \c FALSE - */ -gboolean -gtk_experiment_transcript_load_filename(GtkExperimentTranscript *trans, - const gchar *filename) -{ - gboolean res = FALSE; - ExperimentReader *exp = experiment_reader_new(filename); - - if (exp != NULL) { - res = gtk_experiment_transcript_load(trans, exp); - g_object_unref(exp); - } - - return res; -} - -/** - * @brief Enable or disable drawing a backdrop area - * - * @param trans Widget instance - * @param use Whether to enable (\c TRUE) or disable (\c FALSE) the backdrop - * area - */ -void -gtk_experiment_transcript_set_use_backdrop_area(GtkExperimentTranscript *trans, - gboolean use) -{ - trans->priv->flag_mask &= ~GTK_EXPERIMENT_TRANSCRIPT_USE_BACKDROP_MASK; - trans->priv->flag_mask |= - use ? GTK_EXPERIMENT_TRANSCRIPT_USE_BACKDROP_MASK : 0; - - if (gtk_widget_get_realized(GTK_WIDGET(trans)) && - trans->priv->layer_text != NULL) - gtk_experiment_transcript_text_layer_redraw(trans); -} - -/** - * @brief Retrieve whether a backdrop area is drawn or not - * - * @param trans Widget instance - * @return \c TRUE if it is, else \c FALSE - */ -gboolean -gtk_experiment_transcript_get_use_backdrop_area(GtkExperimentTranscript *trans) -{ - return trans->priv->flag_mask & - GTK_EXPERIMENT_TRANSCRIPT_USE_BACKDROP_MASK; -} - -/** - * @brief Configure transcript's backdrop area - * - * Set a highlighted area of the transcript by specifying start - * and end timepoints. The highlighted area is drawn with a 16% lighter or - * darker background color than the widgets current background color. - * It is ownly drawn when the backdrop area is enabled. - * - * @sa gtk_experiment_transcript_set_use_backdrop_area - * - * @param trans Widget instance - * @param start Start time in milliseconds - * @param end End time in milliseconds - */ -void -gtk_experiment_transcript_set_backdrop_area(GtkExperimentTranscript *trans, - gint64 start, gint64 end) -{ - start = MAX(start, 0); - end = MAX(end, 0); - - if (start <= end) { - trans->priv->backdrop.start = start; - trans->priv->backdrop.end = end; - } else { - trans->priv->backdrop.end = start; - trans->priv->backdrop.start = end; - } - - if (!gtk_experiment_transcript_get_use_backdrop_area(trans)) - return; - - if (gtk_widget_get_realized(GTK_WIDGET(trans)) && - trans->priv->layer_text != NULL) - gtk_experiment_transcript_text_layer_redraw(trans); -} - -/** - * @brief Set or unset reverse (top-down) render mode - * - * The render mode defaults to bottom-up mode for new widget instances. - * - * @param trans Widget instance - * @param reverse Activate reverse-mode (\c TRUE), or deactivate (\c FALSE) - */ -void -gtk_experiment_transcript_set_reverse_mode(GtkExperimentTranscript *trans, - gboolean reverse) -{ - GtkCheckMenuItem *item = - GTK_CHECK_MENU_ITEM(trans->priv->menu_reverse_item); - - gtk_check_menu_item_set_active(item, reverse); -} - -/** - * @brief Get current reverse (top-down) render mode state - * - * @sa gtk_experiment_transcript_set_reverse_mode - * - * @param trans Widget instance - * @return \c TRUE if reverse-mode is active, else \c FALSE - */ -gboolean -gtk_experiment_transcript_get_reverse_mode(GtkExperimentTranscript *trans) -{ - return trans->priv->flag_mask & GTK_EXPERIMENT_TRANSCRIPT_REVERSE_MASK; -} - -/** - * @brief Set alignment (justification) of text blocks in a transcript widget - * - * The alignment defaults to \c PANGO_ALIGN_LEFT for new widget instances. - * - * @param trans Widget instance - * @param alignment New text alignment - */ -void -gtk_experiment_transcript_set_alignment(GtkExperimentTranscript *trans, - PangoAlignment alignment) -{ - PangoAlignment cur_alignment = PANGO_ALIGN_RIGHT; - - for (GSList *cur = trans->priv->alignment_group; - cur != NULL; - cur = cur->next, cur_alignment--) - gtk_check_menu_item_set_active(GTK_CHECK_MENU_ITEM(cur->data), - cur_alignment == alignment); -} - -/** - * @brief Get alignment (justification) of text blocks in a transcript widget - * - * @sa gtk_experiment_transcript_set_alignment - * - * @param trans Widget instance - * @return Current text alignment - */ -PangoAlignment -gtk_experiment_transcript_get_alignment(GtkExperimentTranscript *trans) -{ - if (trans->priv->layer_text_layout == NULL) - return PANGO_ALIGN_LEFT; - - return pango_layout_get_alignment(trans->priv->layer_text_layout); -} - -/** - * @brief Get time-adjustment currently used by a transcript widget - * - * The time-adjustment is the only way to control the portion of the transcript - * displayed by the widget. - * The adjustment's value is in milliseconds. - * The widget will initialize one on construction, so there \e should always be - * an adjustment to get. - * - * @param trans Widget instance - * @return Currently used time-adjustment - */ - -GtkAdjustment * -gtk_experiment_transcript_get_time_adjustment(GtkExperimentTranscript *trans) -{ - return trans->priv->time_adjustment != NULL - ? GTK_ADJUSTMENT(trans->priv->time_adjustment) - : NULL; -} - -/** - * @brief Change time-adjustment used by \e GtkExperimentTranscript - * - * The old adjustment will be - * unreferenced (and possibly destroyed) and a reference to the new - * adjustment will be fetched. - * - * @sa gtk_experiment_transcript_get_time_adjustment - * - * @param trans Widget instance - * @param adj New \e GtkAdjustment to use as time-adjustment. - */ -void -gtk_experiment_transcript_set_time_adjustment(GtkExperimentTranscript *trans, - GtkAdjustment *adj) -{ - GtkWidget *widget = GTK_WIDGET(trans); - - if (trans->priv->time_adjustment == NULL) - return; - - g_signal_handler_disconnect(G_OBJECT(trans->priv->time_adjustment), - trans->priv->time_adj_on_value_changed_id); - - g_object_unref(trans->priv->time_adjustment); - trans->priv->time_adjustment = GTK_OBJECT(adj); - g_object_ref_sink(trans->priv->time_adjustment); - - gtk_adjustment_set_page_size(GTK_ADJUSTMENT(trans->priv->time_adjustment), - (gdouble)PX_TO_TIME(widget->allocation.height)); - - trans->priv->time_adj_on_value_changed_id = - g_signal_connect(G_OBJECT(trans->priv->time_adjustment), - "value-changed", - G_CALLBACK(time_adj_on_value_changed), trans); -} |