/*
* This program 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 of the License, or (at your option) version 3.
*
* 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with the program; if not, see <http://www.gnu.org/licenses/>
*
*
* Authors:
* Chris Lahey <clahey@ximian.com>
* Miguel de Icaza <miguel@ximian.com>
* Federico Mena-Quintero <federico@ximian.com>
*
* Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
*
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <string.h> /* strlen() */
#include <gtk/gtk.h>
#include "e-util/e-unicode.h"
#include "e-table-defines.h"
#include "e-table-header-utils.h"
static PangoLayout *
build_header_layout (GtkWidget *widget,
const gchar *str)
{
PangoLayout *layout;
layout = gtk_widget_create_pango_layout (widget, str);
#ifdef FROB_FONT_DESC
{
PangoFontDescription *desc;
desc = pango_font_description_copy (gtk_widget_get_style (widget)->font_desc);
pango_font_description_set_size (desc,
pango_font_description_get_size (desc) * 1.2);
pango_font_description_set_weight (desc, PANGO_WEIGHT_BOLD);
pango_layout_set_font_description (layout, desc);
pango_font_description_free (desc);
}
#endif
return layout;
}
static void
get_button_padding (GtkWidget *widget,
GtkBorder *padding)
{
GtkStyleContext *context;
GtkStateFlags state_flags;
context = gtk_widget_get_style_context (widget);
state_flags = gtk_widget_get_state_flags (widget);
gtk_style_context_save (context);
gtk_style_context_add_class (context, GTK_STYLE_CLASS_BUTTON);
gtk_style_context_get_padding (context, state_flags, padding);
gtk_style_context_restore (context);
}
/**
* e_table_header_compute_height:
* @ecol: Table column description.
* @widget: The widget from which to build the PangoLayout.
*
* Computes the minimum height required for a table header button.
*
* Return value: The height of the button, in pixels.
**/
gdouble
e_table_header_compute_height (ETableCol *ecol,
GtkWidget *widget)
{
gint height;
PangoLayout *layout;
GtkBorder padding;
g_return_val_if_fail (ecol != NULL, -1);
g_return_val_if_fail (E_IS_TABLE_COL (ecol), -1);
g_return_val_if_fail (GTK_IS_WIDGET (widget), -1);
get_button_padding (widget, &padding);
layout = build_header_layout (widget, ecol->text);
pango_layout_get_pixel_size (layout, NULL, &height);
if (ecol->icon_name != NULL) {
g_return_val_if_fail (ecol->pixbuf != NULL, -1);
height = MAX (height, gdk_pixbuf_get_height (ecol->pixbuf));
}
height = MAX (height, MIN_ARROW_SIZE);
height += padding.top + padding.bottom + 2 * HEADER_PADDING;
g_object_unref (layout);
return height;
}
gdouble
e_table_header_width_extras (GtkWidget *widget)
{
GtkBorder padding;
get_button_padding (widget, &padding);
return padding.left + padding.right + 2 * HEADER_PADDING;
}
/* Creates a pixmap that is a composite of a background color and the upper-left
* corner rectangle of a pixbuf.
*/
#if 0
static GdkPixmap *
make_composite_pixmap (GdkDrawable *drawable,
GdkGC *gc,
GdkPixbuf *pixbuf,
GdkColor *bg,
gint width,
gint height,
gint dither_xofs,
gint dither_yofs)
{
gint pwidth, pheight;
GdkPixmap *pixmap;
GdkPixbuf *tmp;
gint color;
pwidth = gdk_pixbuf_get_width (pixbuf);
pheight = gdk_pixbuf_get_height (pixbuf);
g_return_val_if_fail (width <= pwidth && height <= pheight, NULL);
color = ((bg->red & 0xff00) << 8) |
(bg->green & 0xff00) |
((bg->blue & 0xff00) >> 8);
if (width >= pwidth && height >= pheight) {
tmp = gdk_pixbuf_new (GDK_COLORSPACE_RGB, FALSE, 8, width, height);
if (!tmp)
return NULL;
gdk_pixbuf_composite_color (pixbuf, tmp,
0, 0,
width, height,
0, 0,
1.0, 1.0,
GDK_INTERP_NEAREST,
255,
0, 0,
16,
color, color);
} else {
gint x, y, rowstride;
GdkPixbuf *fade;
guchar *pixels;
/* Do a nice fade of the pixbuf down and to the right */
fade = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, 8, width, height);
if (!fade)
return NULL;
gdk_pixbuf_copy_area (pixbuf,
0, 0,
width, height,
fade,
0, 0);
rowstride = gdk_pixbuf_get_rowstride (fade);
pixels = gdk_pixbuf_get_pixels (fade);
for (y = 0; y < height; y++) {
guchar *p;
gint yfactor;
p = pixels + y * rowstride;
if (height < pheight)
yfactor = height - y;
else
yfactor = height;
for (x = 0; x < width; x++) {
gint xfactor;
if (width < pwidth)
xfactor = width - x;
else
xfactor = width;
p[3] = ((gint) p[3] * xfactor * yfactor / (width * height));
p += 4;
}
}
tmp = gdk_pixbuf_new (GDK_COLORSPACE_RGB, FALSE, 8, width, height);
if (!tmp) {
g_object_unref (fade);
return NULL;
}
gdk_pixbuf_composite_color (fade, tmp,
0, 0,
width, height,
0, 0,
1.0, 1.0,
GDK_INTERP_NEAREST,
255,
0, 0,
16,
color, color);
g_object_unref (fade);
}
pixmap = gdk_pixmap_new (drawable, width, height, -1);
gdk_draw_rgb_image_dithalign (pixmap, gc,
0, 0,
width, height,
GDK_RGB_DITHER_NORMAL,
gdk_pixbuf_get_pixels (tmp),
gdk_pixbuf_get_rowstride (tmp),
dither_xofs, dither_yofs);
g_object_unref (tmp);
return pixmap;
}
#endif
/**
* e_table_header_draw_button:
* @drawable: Destination drawable.
* @ecol: Table column for the header information.
* @widget: The table widget.
* @x: Leftmost coordinate of the button.
* @y: Topmost coordinate of the button.
* @width: Width of the region to draw.
* @height: Height of the region to draw.
* @button_width: Width for the complete button.
* @button_height: Height for the complete button.
* @arrow: Arrow type to use as a sort indicator.
*
* Draws a button suitable for a table header.
**/
void
e_table_header_draw_button (cairo_t *cr,
ETableCol *ecol,
GtkWidget *widget,
gint x,
gint y,
gint width,
gint height,
gint button_width,
gint button_height,
ETableColArrow arrow)
{
gint inner_x, inner_y;
gint inner_width, inner_height;
gint arrow_width = 0, arrow_height = 0;
PangoLayout *layout;
GtkStyleContext *context;
GtkBorder padding;
GtkStateFlags state_flags;
g_return_if_fail (cr != NULL);
g_return_if_fail (ecol != NULL);
g_return_if_fail (E_IS_TABLE_COL (ecol));
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_WIDGET (widget));
g_return_if_fail (button_width > 0 && button_height > 0);
/* Button bevel */
context = gtk_widget_get_style_context (widget);
state_flags = gtk_widget_get_state_flags (widget);
gtk_style_context_save (context);
gtk_style_context_set_state (context, state_flags);
gtk_style_context_add_class (context, GTK_STYLE_CLASS_BUTTON);
gtk_style_context_get_padding (context, state_flags, &padding);
gtk_render_background (
context, cr, x, y,
button_width, button_height);
gtk_render_frame (
context, cr, x, y,
button_width, button_height);
/* Inside area */
inner_width = button_width - (padding.left + padding.right + 2 * HEADER_PADDING);
inner_height = button_height - (padding.top + padding.bottom + 2 * HEADER_PADDING);
if (inner_width < 1 || inner_height < 1) {
return; /* nothing fits */
}
inner_x = x + padding.left + HEADER_PADDING;
inner_y = y + padding.top + HEADER_PADDING;
/* Arrow space */
switch (arrow) {
case E_TABLE_COL_ARROW_NONE:
break;
case E_TABLE_COL_ARROW_UP:
case E_TABLE_COL_ARROW_DOWN:
arrow_width = MIN (MIN_ARROW_SIZE, inner_width);
arrow_height = MIN (MIN_ARROW_SIZE, inner_height);
if (ecol->icon_name == NULL)
inner_width -= arrow_width + HEADER_PADDING;
break;
default:
g_return_if_reached ();
}
if (inner_width < 1) {
gtk_style_context_restore (context);
return; /* nothing else fits */
}
layout = build_header_layout (widget, ecol->text);
pango_layout_set_ellipsize (layout, PANGO_ELLIPSIZE_END);
/* Pixbuf or label */
if (ecol->icon_name != NULL) {
gint pwidth, pheight;
gint clip_height;
gint xpos;
g_return_if_fail (ecol->pixbuf != NULL);
pwidth = gdk_pixbuf_get_width (ecol->pixbuf);
pheight = gdk_pixbuf_get_height (ecol->pixbuf);
clip_height = MIN (pheight, inner_height);
xpos = inner_x;
if (inner_width - pwidth > 11) {
gint ypos;
pango_layout_get_pixel_size (layout, &width, NULL);
if (width < inner_width - (pwidth + 1)) {
xpos = inner_x + (inner_width - width - (pwidth + 1)) / 2;
}
ypos = inner_y;
pango_layout_set_width (
layout, (inner_width - (xpos - inner_x)) *
PANGO_SCALE);
gtk_render_layout (
context, cr, xpos + pwidth + 1,
ypos, layout);
}
gtk_render_icon (
context, cr, ecol->pixbuf, xpos,
inner_y + (inner_height - clip_height) / 2);
} else {
pango_layout_set_width (layout, inner_width * PANGO_SCALE);
gtk_render_layout (context, cr, inner_x, inner_y, layout);
}
switch (arrow) {
case E_TABLE_COL_ARROW_NONE:
break;
case E_TABLE_COL_ARROW_UP:
case E_TABLE_COL_ARROW_DOWN: {
if (ecol->icon_name == NULL)
inner_width += arrow_width + HEADER_PADDING;
gtk_render_arrow (
context, cr,
(arrow == E_TABLE_COL_ARROW_UP) ? 0 : G_PI,
inner_x + inner_width - arrow_width,
inner_y + (inner_height - arrow_height) / 2,
MAX (arrow_width, arrow_height));
break;
}
default:
g_return_if_reached ();
}
g_object_unref (layout);
gtk_style_context_restore (context);
}