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Diffstat (limited to 'widgets/table/e-table-header-utils.c')
-rw-r--r-- | widgets/table/e-table-header-utils.c | 467 |
1 files changed, 0 insertions, 467 deletions
diff --git a/widgets/table/e-table-header-utils.c b/widgets/table/e-table-header-utils.c deleted file mode 100644 index d5000a9800..0000000000 --- a/widgets/table/e-table-header-utils.c +++ /dev/null @@ -1,467 +0,0 @@ -/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */ -/* - * e-table-header-utils.h - * Copyright 2000, 2001, Ximian, Inc. - * - * Authors: - * Chris Lahey <clahey@ximian.com> - * Miguel de Icaza <miguel@ximian.com> - * Federico Mena-Quintero <federico@ximian.com> - * - * This library is free software; you can redistribute it and/or - * modify it under the terms of the GNU Library General Public - * License, version 2, as published by the Free Software Foundation. - * - * 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 - * Library General Public License for more details. - * - * You should have received a copy of the GNU Library General Public - * License along with this library; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA - * 02111-1307, USA. - */ - -#ifdef HAVE_CONFIG_H -#include <config.h> -#endif - -#include <string.h> /* strlen() */ -#include <glib.h> -#include "e-table-defines.h" -#include "e-table-header-utils.h" - - - -/** - * e_table_header_compute_height: - * @ecol: Table column description. - * @style: Style for the button's bevel. - * @font: Font for the button's text, or NULL if no font is available. - * - * Computes the minimum height required for a table header button. - * - * Return value: The height of the button, in pixels. - **/ -double -e_table_header_compute_height (ETableCol *ecol, GtkStyle *style, GdkFont *font) -{ - int ythick; - int height; - - g_return_val_if_fail (ecol != NULL, -1); - g_return_val_if_fail (E_IS_TABLE_COL (ecol), -1); - g_return_val_if_fail (style != NULL, -1); - - ythick = style->klass->ythickness; - - if (font) - height = font->ascent + font->descent; - else - height = 16; /* FIXME: default? */ - - if (ecol->is_pixbuf) { - g_assert (ecol->pixbuf != NULL); - height = MAX (height, gdk_pixbuf_get_height (ecol->pixbuf)); - } - - height = MAX (height, MIN_ARROW_SIZE); - - height += 2 * (ythick + HEADER_PADDING); - - return height; -} - -double -e_table_header_width_extras (GtkStyle *style) -{ - g_return_val_if_fail (style != NULL, -1); - - return 2 * (style->klass->xthickness + HEADER_PADDING); -} - -/* Creates a pixmap that is a composite of a background color and the upper-left - * corner rectangle of a pixbuf. - */ -static GdkPixmap * -make_composite_pixmap (GdkDrawable *drawable, GdkGC *gc, - GdkPixbuf *pixbuf, GdkColor *bg, int width, int height, - int dither_xofs, int dither_yofs) -{ - int pwidth, pheight; - GdkPixmap *pixmap; - GdkPixbuf *tmp; - int color; - - pwidth = gdk_pixbuf_get_width (pixbuf); - pheight = gdk_pixbuf_get_height (pixbuf); - g_assert (width <= pwidth && height <= pheight); - - 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 { - int 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; - int yfactor; - - p = pixels + y * rowstride; - - if (height < pheight) - yfactor = height - y; - else - yfactor = height; - - for (x = 0; x < width; x++) { - int xfactor; - - if (width < pwidth) - xfactor = width - x; - else - xfactor = width; - - p[3] = ((int) p[3] * xfactor * yfactor / (width * height)); - p += 4; - } - } - - tmp = gdk_pixbuf_new (GDK_COLORSPACE_RGB, FALSE, 8, width, height); - if (!tmp) { - gdk_pixbuf_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); - - gdk_pixbuf_unref (fade); - } - - pixmap = gdk_pixmap_new (drawable, width, height, gdk_rgb_get_visual ()->depth); - 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); - gdk_pixbuf_unref (tmp); - - return pixmap; -} - -static GtkWidget *g_label; - -/** - * e_table_header_draw_button: - * @drawable: Destination drawable. - * @ecol: Table column for the header information. - * @style: Style to use for drawing the button. - * @font: Font for the button's text. - * @state: State of the table widget. - * @widget: The table widget. - * @gc: GC to use for drawing. - * @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 (GdkDrawable *drawable, ETableCol *ecol, - GtkStyle *style, GdkFont *font, GtkStateType state, - GtkWidget *widget, - int x, int y, int width, int height, - int button_width, int button_height, - ETableColArrow arrow) -{ - int xthick, ythick; - int inner_x, inner_y; - int inner_width, inner_height; - GdkGC *gc; - - g_return_if_fail (drawable != NULL); - g_return_if_fail (ecol != NULL); - g_return_if_fail (E_IS_TABLE_COL (ecol)); - g_return_if_fail (style != NULL); - g_return_if_fail (font != NULL); - g_return_if_fail (widget != NULL); - g_return_if_fail (GTK_IS_WIDGET (widget)); - g_return_if_fail (button_width > 0 && button_height > 0); - - if (g_label == NULL) { - GtkWidget *button = gtk_button_new_with_label("Hi"); - GtkWidget *window = gtk_window_new(GTK_WINDOW_TOPLEVEL); - g_label = GTK_BIN(button)->child; - gtk_container_add (GTK_CONTAINER (window), button); - gtk_widget_ensure_style (window); - gtk_widget_ensure_style (button); - gtk_widget_ensure_style (g_label); - } - - gc = g_label->style->fg_gc[GTK_STATE_NORMAL]; - - xthick = style->klass->xthickness; - ythick = style->klass->ythickness; - - /* Button bevel */ - - gtk_paint_box (style, drawable, state, GTK_SHADOW_OUT, - NULL, widget, "button", - x, y, button_width, button_height); - - /* Inside area */ - - inner_width = button_width - 2 * (xthick + HEADER_PADDING); - inner_height = button_height - 2 * (ythick + HEADER_PADDING); - - if (inner_width < 1 || inner_height < 1) - return; /* nothing fits */ - - inner_x = x + xthick + HEADER_PADDING; - inner_y = y + ythick + HEADER_PADDING; - - /* Arrow */ - - switch (arrow) { - case E_TABLE_COL_ARROW_NONE: - break; - - case E_TABLE_COL_ARROW_UP: - case E_TABLE_COL_ARROW_DOWN: { - int arrow_width, arrow_height; - - arrow_width = MIN (MIN_ARROW_SIZE, inner_width); - arrow_height = MIN (MIN_ARROW_SIZE, inner_height); - - gtk_paint_arrow (style, drawable, state, - GTK_SHADOW_IN, NULL, widget, "header", - (arrow == E_TABLE_COL_ARROW_UP) ? GTK_ARROW_UP : GTK_ARROW_DOWN, - TRUE, - inner_x + inner_width - arrow_width, - inner_y + (inner_height - arrow_height) / 2, - arrow_width, arrow_height); - - inner_width -= arrow_width + HEADER_PADDING; - break; - } - - default: - g_assert_not_reached (); - return; - } - - if (inner_width < 1) - return; /* nothing else fits */ - - /* Pixbuf or label */ - - if (ecol->is_pixbuf) { - int pwidth, pheight; - int clip_width, clip_height; - int xpos; - GdkPixmap *pixmap; - - g_assert (ecol->pixbuf != NULL); - - pwidth = gdk_pixbuf_get_width (ecol->pixbuf); - pheight = gdk_pixbuf_get_height (ecol->pixbuf); - - clip_width = MIN (pwidth, inner_width); - clip_height = MIN (pheight, inner_height); - - xpos = inner_x; - - if (inner_width - pwidth > 11) { - int rbearing; - int width; - int ypos; - - gdk_string_extents (font, ecol->text, NULL, &rbearing, &width, NULL, NULL); - if (rbearing < inner_width - (pwidth + 1)) { - xpos = inner_x + (inner_width - width - (pwidth + 1)) / 2; - } - - ypos = inner_y + (inner_height - font->ascent - font->descent) / 2 + font->ascent; - - e_table_draw_elided_string (drawable, font, gc, - xpos + pwidth + 1, ypos, - ecol->text, inner_width - (xpos - inner_x), FALSE); - } - - pixmap = make_composite_pixmap (drawable, gc, - ecol->pixbuf, &style->bg[state], - clip_width, clip_height, - xpos, - inner_y + (inner_height - clip_height) / 2); - if (pixmap) { - gdk_draw_pixmap (drawable, gc, pixmap, - 0, 0, - xpos, - inner_y + (inner_height - clip_height) / 2, - clip_width, clip_height); - gdk_pixmap_unref (pixmap); - } - } else { - int ypos; - - ypos = inner_y + (inner_height - font->ascent - font->descent) / 2 + font->ascent; - - e_table_draw_elided_string (drawable, font, gc, - inner_x, ypos, - ecol->text, inner_width, TRUE); - } -} - -/* Computes the length of a string that needs to be trimmed for elision */ -static int -compute_elision_length (GdkFont *font, const char *str, int max_width) -{ - int len; - int l = 0, left, right; - int rbearing; - - len = strlen (str); - - if (len <= 0) - return 0; - - left = 0; - right = len; - - while (left < right) { - l = (left + right) / 2; - gdk_text_extents (font, str, l, NULL, &rbearing, NULL, NULL, NULL); - - if (rbearing < max_width) - left = l + 1; - else if (rbearing > max_width) - right = l; - else - return l; - } - - if (rbearing > max_width) - return MAX (0, l - 1); - else - return l; -} - -/* Default width of the elision arrow in pixels */ -#define ARROW_WIDTH 4 - -/** - * e_table_draw_elided_string: - * @drawable: Destination drawable. - * @font: Font for the text. - * @gc: GC to use for drawing. - * @x: X insertion point for the string. - * @y: Y insertion point for the string's baseline. - * @str: String to draw. - * @max_width: Maximum width in which the string must fit. - * @center: Whether to center the string in the available area if it does fit. - * - * Draws a string, possibly trimming it so that it fits inside the specified - * maximum width. If it does not fit, an elision indicator is drawn after the - * last character that does fit. - **/ -void -e_table_draw_elided_string (GdkDrawable *drawable, GdkFont *font, GdkGC *gc, - int x, int y, const char *str, int max_width, gboolean center) -{ - int rbearing; - int width; - - g_return_if_fail (drawable != NULL); - g_return_if_fail (font != NULL); - g_return_if_fail (gc != NULL); - g_return_if_fail (str != NULL); - g_return_if_fail (max_width >= 0); - - gdk_string_extents (font, str, NULL, &rbearing, &width, NULL, NULL); - - if (rbearing <= max_width) { - int xpos; - - if (center) - xpos = x + (max_width - width) / 2; - else - xpos = x; - - gdk_draw_string (drawable, font, gc, xpos, y, str); - } else { - int arrow_width; - int len; - int i; - - if (max_width < ARROW_WIDTH + 1) - arrow_width = max_width - 1; - else - arrow_width = ARROW_WIDTH; - - len = compute_elision_length (font, str, max_width - arrow_width - 1); - gdk_draw_text (drawable, font, gc, x, y, str, len); - - gdk_text_extents (font, str, len, NULL, &rbearing, NULL, NULL, NULL); - - y -= font->ascent; - - for (i = 0; i < arrow_width; i++) { - int h; - - h = 2 * i + 1; - - gdk_draw_line (drawable, gc, - x + rbearing + arrow_width - i, - y + (font->ascent + font->descent - h) / 2, - x + rbearing + arrow_width - i, - y + (font->ascent + font->descent - h) / 2 + h - 1); - } - } -} |