diff options
Diffstat (limited to 'liblogdiag/ld-category-symbol-view.c')
| -rw-r--r-- | liblogdiag/ld-category-symbol-view.c | 151 |
1 files changed, 138 insertions, 13 deletions
diff --git a/liblogdiag/ld-category-symbol-view.c b/liblogdiag/ld-category-symbol-view.c index e9e9e6c..365be62 100644 --- a/liblogdiag/ld-category-symbol-view.c +++ b/liblogdiag/ld-category-symbol-view.c @@ -30,11 +30,23 @@ #define SYMBOL_HEIGHT 40 /* Height of a symbol. */ #define SYMBOL_SPACING 10 /* Spacing between symbols, and also borders. */ +typedef struct +{ + LdSymbol *symbol; /* The associated symbol, ref'ed. */ + gchar *path; /* Path to the symbol. */ + + GdkRectangle rect; /* Clipping rectangle. */ + gdouble scale; /* Scale to draw the symbol in. */ + gdouble dx, dy; /* Delta into .rect. */ +} +SymbolData; + /* * LdCategorySymbolViewPrivate: * @category: a category object assigned as a model. * @path: path to the category within the library. * @layout: (element-type SymbolData *): current layout of symbols. + * @preselected: currently preselected symbol. * @height_negotiation: whether we are negotiating height right now. */ struct _LdCategorySymbolViewPrivate @@ -42,20 +54,10 @@ struct _LdCategorySymbolViewPrivate LdCategory *category; gchar *path; GSList *layout; + SymbolData *preselected; guint height_negotiation : 1; }; -typedef struct -{ - LdSymbol *symbol; /* The associated symbol, ref'ed. */ - gchar *path; /* Path to the symbol. */ - - GdkRectangle rect; /* Clipping rectangle. */ - gdouble scale; /* Scale to draw the symbol in. */ - gdouble dx, dy; /* Delta into .rect. */ -} -SymbolData; - enum { PROP_0, @@ -104,6 +106,112 @@ ld_category_symbol_view_class_init (LdCategorySymbolViewClass *klass) } static void +symbol_redraw (LdCategorySymbolView *self, SymbolData *symbol) +{ + gtk_widget_queue_draw_area (GTK_WIDGET (self), + symbol->rect.x, + symbol->rect.y, + symbol->rect.width, + symbol->rect.height); +} + +static void +symbol_deselect (LdCategorySymbolView *self) +{ + if (!self->priv->preselected) + return; + + symbol_redraw (self, self->priv->preselected); + self->priv->preselected = NULL; + gtk_drag_source_unset (GTK_WIDGET (self)); +} + +static gboolean +on_leave_notify (GtkWidget *widget, GdkEventCrossing *event, gpointer user_data) +{ + symbol_deselect (LD_CATEGORY_SYMBOL_VIEW (widget)); + return FALSE; +} + +static gboolean +on_motion_notify (GtkWidget *widget, GdkEventMotion *event, gpointer user_data) +{ + LdCategorySymbolView *self; + GSList *iter; + + if (event->state & GDK_BUTTON1_MASK) + return FALSE; + + self = LD_CATEGORY_SYMBOL_VIEW (widget); + for (iter = self->priv->layout; iter; iter = iter->next) + { + SymbolData *data; + + data = iter->data; + if (event->x < data->rect.x + || event->y < data->rect.y + || event->x >= data->rect.x + data->rect.width + || event->y >= data->rect.y + data->rect.height) + continue; + + if (data != self->priv->preselected) + { + GtkTargetEntry target = {"ld-symbol", GTK_TARGET_SAME_APP, 0}; + + symbol_deselect (self); + self->priv->preselected = data; + symbol_redraw (self, data); + + gtk_drag_source_set (widget, + GDK_BUTTON1_MASK, &target, 1, GDK_ACTION_COPY); + } + return FALSE; + } + + symbol_deselect (self); + return FALSE; +} + +static void +on_drag_data_get +(GtkWidget *widget, GdkDragContext *ctx, GtkSelectionData *selection_data, + guint target_type, guint time, gpointer user_data) +{ + LdCategorySymbolView *self; + + self = LD_CATEGORY_SYMBOL_VIEW (widget); + g_return_if_fail (self->priv->preselected != NULL); + + gtk_selection_data_set (selection_data, + gtk_selection_data_get_target (selection_data), + 8, (guchar *) self->priv->preselected->path, + strlen (self->priv->preselected->path)); +} + +static void +on_drag_begin (GtkWidget *widget, GdkDragContext *ctx, gpointer user_data) +{ + LdCategorySymbolView *self; + GdkPixbuf *pbuf; + + self = LD_CATEGORY_SYMBOL_VIEW (widget); + g_return_if_fail (self->priv->preselected != NULL); + + /* Some of the larger previews didn't work, and we have to get rid of + * the icon later when we're hovering above LdDiagramView anyway. */ + pbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, 8, 1, 1); + gdk_pixbuf_fill (pbuf, 0x00000000); + gtk_drag_set_icon_pixbuf (ctx, pbuf, 0, 0); + g_object_unref (pbuf); +} + +static void +on_drag_end (GtkWidget *widget, GdkDragContext *ctx, gpointer user_data) +{ + symbol_deselect (LD_CATEGORY_SYMBOL_VIEW (widget)); +} + +static void ld_category_symbol_view_init (LdCategorySymbolView *self) { self->priv = G_TYPE_INSTANCE_GET_PRIVATE @@ -116,6 +224,18 @@ ld_category_symbol_view_init (LdCategorySymbolView *self) g_signal_connect (self, "expose-event", G_CALLBACK (on_expose_event), NULL); + g_signal_connect (self, "motion-notify-event", + G_CALLBACK (on_motion_notify), NULL); + g_signal_connect (self, "leave-notify-event", + G_CALLBACK (on_leave_notify), NULL); + + g_signal_connect (self, "drag-begin", + G_CALLBACK (on_drag_begin), NULL); + g_signal_connect (self, "drag-data-get", + G_CALLBACK (on_drag_data_get), NULL); + g_signal_connect (self, "drag-end", + G_CALLBACK (on_drag_end), NULL); + gtk_widget_add_events (GTK_WIDGET (self), GDK_POINTER_MOTION_MASK | GDK_POINTER_MOTION_HINT_MASK | GDK_BUTTON_PRESS_MASK | GDK_BUTTON_RELEASE_MASK @@ -136,6 +256,7 @@ layout_destroy (LdCategorySymbolView *self) g_slist_foreach (self->priv->layout, (GFunc) symbol_data_free, NULL); g_slist_free (self->priv->layout); self->priv->layout = NULL; + self->priv->preselected = NULL; } static void @@ -331,11 +452,15 @@ on_expose_event (GtkWidget *widget, GdkEventExpose *event, gpointer user_data) gdk_cairo_rectangle (cr, &data->rect); cairo_clip (cr); + gdk_cairo_set_source_color (cr, + >k_widget_get_style (widget)->text[GTK_STATE_NORMAL]); + + if (data == self->priv->preselected) + cairo_paint_with_alpha (cr, 0.1); + cairo_translate (cr, data->rect.x + data->dx, data->rect.y + data->dy); cairo_scale (cr, data->scale, data->scale); - gdk_cairo_set_source_color (cr, - >k_widget_get_style (widget)->text[GTK_STATE_NORMAL]); cairo_set_line_width (cr, 1 / data->scale); ld_symbol_draw (data->symbol, cr); |