From 700a8e8096468491466c0e2c70fab525d66016dd Mon Sep 17 00:00:00 2001 From: Davyd Madeley Date: Tue, 7 Jul 2009 11:05:04 +0100 Subject: EmpathyKludgeLabel is a child of GtkLabel EmpathyKludgeLabel sets the PangoLayout width to the width of the GtkAllocation. It then fudges the allocation in the expose to make the alignment work correctly. --- libempathy-gtk/empathy-kludge-label.c | 89 +++++++++++++++++++++++++++++++++++ libempathy-gtk/empathy-kludge-label.h | 53 +++++++++++++++++++++ 2 files changed, 142 insertions(+) create mode 100644 libempathy-gtk/empathy-kludge-label.c create mode 100644 libempathy-gtk/empathy-kludge-label.h (limited to 'libempathy-gtk') diff --git a/libempathy-gtk/empathy-kludge-label.c b/libempathy-gtk/empathy-kludge-label.c new file mode 100644 index 000000000..f4a29dec2 --- /dev/null +++ b/libempathy-gtk/empathy-kludge-label.c @@ -0,0 +1,89 @@ +/* vim: set ts=4 sts=4 sw=4 et: */ +/* + * Copyright (C) 2009 Collabora Ltd. + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library 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 + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + * + * Authors: Davyd Madeley + */ + +#include "empathy-kludge-label.h" + +G_DEFINE_TYPE (EmpathyKludgeLabel, empathy_kludge_label, GTK_TYPE_LABEL); + +static void +empathy_kludge_label_size_allocate (GtkWidget *self, + GtkAllocation *allocation) +{ + PangoLayout *layout; + + GTK_WIDGET_CLASS (empathy_kludge_label_parent_class)->size_allocate ( + self, allocation); + + /* force the width of the PangoLayout to be the width of the allocation */ + layout = gtk_label_get_layout (GTK_LABEL (self)); + pango_layout_set_width (layout, allocation->width * PANGO_SCALE); +} + +static gboolean +empathy_kludge_label_expose_event (GtkWidget *self, + GdkEventExpose *event) +{ + PangoLayout *layout; + PangoRectangle rect; + GtkAllocation real_allocation; + gboolean r; + + layout = gtk_label_get_layout (GTK_LABEL (self)); + pango_layout_get_pixel_extents (layout, NULL, &rect); + + /* this is mind-bendingly evil: + * get_layout_location() is going to remove rect.x from the position of the + * layout when painting it. This really sucks. We're going to compensate by + * adding this value to the allocation. + */ + real_allocation = self->allocation; + self->allocation.x += rect.x; + + r = GTK_WIDGET_CLASS (empathy_kludge_label_parent_class)->expose_event ( + self, event); + + self->allocation = real_allocation; + + return r; +} + +static void +empathy_kludge_label_class_init (EmpathyKludgeLabelClass *klass) +{ + GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass); + + widget_class->size_allocate = empathy_kludge_label_size_allocate; + widget_class->expose_event = empathy_kludge_label_expose_event; +} + +static void +empathy_kludge_label_init (EmpathyKludgeLabel *self) +{ +} + +GtkWidget * +empathy_kludge_label_new (const char *str) +{ + return g_object_new (EMPATHY_TYPE_KLUDGE_LABEL, + "label", str, + "xalign", 0., + NULL); +} diff --git a/libempathy-gtk/empathy-kludge-label.h b/libempathy-gtk/empathy-kludge-label.h new file mode 100644 index 000000000..f2ea1e938 --- /dev/null +++ b/libempathy-gtk/empathy-kludge-label.h @@ -0,0 +1,53 @@ +/* + * Copyright (C) 2009 Collabora Ltd. + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library 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 + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + * + * Authors: Davyd Madeley + */ + +#ifndef __EMPATHY_KLUDGE_LABEL_H__ +#define __EMPATHY_KLUDGE_LABEL_H__ + +#include + +G_BEGIN_DECLS + +#define EMPATHY_TYPE_KLUDGE_LABEL (empathy_kludge_label_get_type ()) +#define EMPATHY_KLUDGE_LABEL(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), EMPATHY_TYPE_KLUDGE_LABEL, EmpathyKludgeLabel)) +#define EMPATHY_KLUDGE_LABEL_CLASS(obj) (G_TYPE_CHECK_CLASS_CAST ((obj), EMPATHY_TYPE_KLUDGE_LABEL, EmpathyKludgeLabelClass)) +#define EMPATHY_IS_KLUDGE_LABEL(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), EMPATHY_TYPE_KLUDGE_LABEL)) +#define EMPATHY_IS_KLUDGE_LABEL_CLASS(obj) (G_TYPE_CHECK_CLASS_TYPE ((obj), EMPATHY_TYPE_KLUDGE_LABEL)) +#define EMPATHY_KLUDGE_LABEL_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), EMPATHY_TYPE_KLUDGE_LABEL, EmpathyKludgeLabelClass)) + +typedef struct _EmpathyKludgeLabel EmpathyKludgeLabel; +typedef struct _EmpathyKludgeLabelClass EmpathyKludgeLabelClass; + +struct _EmpathyKludgeLabel +{ + GtkLabel parent; +}; + +struct _EmpathyKludgeLabelClass +{ + GtkLabelClass parent_class; +}; + +GType empathy_kludge_label_get_type (void); +GtkWidget *empathy_kludge_label_new (const char *str); + +G_END_DECLS + +#endif -- cgit v1.2.3