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authorMiguel de Icaza <miguel@gnu.org>1999-11-16 04:59:29 +0800
committerArturo Espinosa <unammx@src.gnome.org>1999-11-16 04:59:29 +0800
commit5ba51e992d6f702cccdcc42402bc3086776d00d1 (patch)
tree93d613ce074df46981a1df8dc419ce39b02f0b1c /widgets/table/e-table-header-item.c
parent7b1bd483b937fb6bf3d59dda200a0e6af6f2cc00 (diff)
downloadgsoc2013-evolution-5ba51e992d6f702cccdcc42402bc3086776d00d1.tar.gz
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Add resizing capabilities.
1999-11-14 Miguel de Icaza <miguel@gnu.org> * e-table-header-item.c (is_pointer_on_division): Add resizing capabilities. * e-table-sorted.c: Finish implementation. 1999-11-13 Miguel de Icaza <miguel@gnu.org> * e-table-sorted.c: Implement e-table-sorted object. 1999-11-12 Miguel de Icaza <miguel@gnu.org> * e-table-header-item.c: Make the thing configurable. * e-table-header-item.h: Add font field, location, height. svn path=/trunk/; revision=1388
Diffstat (limited to 'widgets/table/e-table-header-item.c')
-rw-r--r--widgets/table/e-table-header-item.c303
1 files changed, 268 insertions, 35 deletions
diff --git a/widgets/table/e-table-header-item.c b/widgets/table/e-table-header-item.c
index effdbb3f0b..50b0b6a677 100644
--- a/widgets/table/e-table-header-item.c
+++ b/widgets/table/e-table-header-item.c
@@ -1,16 +1,23 @@
/*
- * E-table-column-view.c: A canvas view of the TableColumn.
+ * E-table-column-view.c: A canvas item based view of the ETableColumn.
*
* Author:
* Miguel de Icaza (miguel@gnu.org)
*
- * Copyright 1999, International GNOME Support.
+ * Copyright 1999, Helix Code, Inc.
*/
#include <config.h>
#include "e-table-header.h"
#include "e-table-header-item.h"
+#include "e-cursors.h"
-#define ETHI_HEIGHT 14
+/* Padding above and below of the string in the header display */
+#define PADDING 4
+
+/* Defines the tolerance for proximity of the column division to the cursor position */
+#define TOLERANCE 2
+
+#define ETHI_RESIZING(x) ((x)->resize_col != -1)
#define PARENT_OBJECT_TYPE gnome_canvas_item_get_type ()
@@ -18,7 +25,10 @@ static GnomeCanvasItemClass *ethi_parent_class;
enum {
ARG_0,
- ARG_TABLE_HEADER
+ ARG_TABLE_HEADER,
+ ARG_TABLE_X,
+ ARG_TABLE_Y,
+ ARG_TABLE_FONTSET
};
static void
@@ -35,17 +45,33 @@ ethi_destroy (GtkObject *object)
static void
ethi_update (GnomeCanvasItem *item, double *affine, ArtSVP *clip_path, int flags)
{
+ ETableHeaderItem *ethi = E_TABLE_HEADER_ITEM (item);
+
if (GNOME_CANVAS_ITEM_CLASS (ethi_parent_class)->update)
(*GNOME_CANVAS_ITEM_CLASS (ethi_parent_class)->update)(item, affine, clip_path, flags);
- item->x1 = 0;
- item->y1 = 0;
+ item->x1 = ethi->x1;
+ item->y1 = ethi->y1;
item->x2 = INT_MAX;
- item->y2 = INT_MAX;
+ item->y2 = ethi->x1 + ethi->height;
+
gnome_canvas_group_child_bounds (GNOME_CANVAS_GROUP (item->parent), item);
}
static void
+ethi_font_load (ETableHeaderItem *ethi, char *font)
+{
+ if (ethi->font)
+ gdk_font_unref (ethi->font);
+
+ ethi->font = gdk_fontset_load (font);
+ if (ethi->font == NULL)
+ ethi->font = gdk_font_load ("fixed");
+
+ ethi->height = ethi->font->ascent + ethi->font->descent + PADDING;
+}
+
+static void
ethi_set_arg (GtkObject *o, GtkArg *arg, guint arg_id)
{
GnomeCanvasItem *item;
@@ -59,6 +85,19 @@ ethi_set_arg (GtkObject *o, GtkArg *arg, guint arg_id)
case ARG_TABLE_HEADER:
ethi->eth = GTK_VALUE_POINTER (*arg);
break;
+
+ case ARG_TABLE_X:
+ ethi->x1 = GTK_VALUE_INT (*arg);
+ break;
+
+ case ARG_TABLE_Y:
+ ethi->y1 = GTK_VALUE_INT (*arg);
+ break;
+
+ case ARG_TABLE_FONTSET:
+ ethi_font_load (ethi, GTK_VALUE_STRING (*arg));
+ break;
+
}
ethi_update (item, NULL, NULL, 0);
}
@@ -80,6 +119,9 @@ ethi_realize (GnomeCanvasItem *item)
gdk_gc_set_foreground (ethi->gc, &c);
ethi->normal_cursor = gdk_cursor_new (GDK_ARROW);
+
+ if (!ethi->font)
+ ethi_font_load (ethi, "fixed");
}
static void
@@ -101,6 +143,45 @@ ethi_unrealize (GnomeCanvasItem *item)
}
static void
+draw_button (ETableHeaderItem *ethi, ETableCol *col,
+ GdkDrawable *drawable, GdkGC *gc, GtkStyle *style,
+ int x, int y, int width, int height)
+{
+ GdkRectangle clip;
+ int xtra;
+
+ gdk_draw_rectangle (
+ drawable, gc, TRUE,
+ x + 1, y + 1, width - 2, height -2);
+
+ gtk_draw_shadow (
+ style, drawable,
+ GTK_STATE_NORMAL, GTK_SHADOW_OUT,
+ x , y, width, height);
+
+ clip.x = x + 2;
+ clip.y = y + 2;
+ clip.width = width - 4;
+ clip.height = ethi->height;
+
+ gdk_gc_set_clip_rectangle (ethi->gc, &clip);
+
+ /* Center the thing */
+ xtra = (clip.width - gdk_string_measure (ethi->font, col->id))/2;
+
+ if (xtra < 0)
+ xtra = 0;
+
+ /* Skip over border */
+ x += xtra + 2;
+
+ gdk_draw_text (
+ drawable, ethi->font,
+ ethi->gc, x, y + ethi->height - PADDING,
+ col->id, strlen (col->id));
+}
+
+static void
ethi_draw (GnomeCanvasItem *item, GdkDrawable *drawable, int x1, int y1, int width, int height)
{
ETableHeaderItem *ethi = E_TABLE_HEADER_ITEM (item);
@@ -112,11 +193,17 @@ ethi_draw (GnomeCanvasItem *item, GdkDrawable *drawable, int x1, int y1, int wid
int x;
total = 0;
- x = 0;
+ x = -x1;
+
for (col = 0; col < cols; col++){
ETableCol *ecol = e_table_header_get_column (ethi->eth, col);
- const int col_width = ecol->width;
+ int col_width;
+ if (col == ethi->resize_col)
+ col_width = ethi->resize_width;
+ else
+ col_width = ecol->width;
+
if (x1 > total + col_width){
x += col_width;
continue;
@@ -127,32 +214,11 @@ ethi_draw (GnomeCanvasItem *item, GdkDrawable *drawable, int x1, int y1, int wid
gc = GTK_WIDGET (canvas)->style->bg_gc [GTK_STATE_ACTIVE];
- gdk_draw_rectangle (
- drawable, gc, TRUE,
- x + 1, -y1 + 1, col_width - 2, ETHI_HEIGHT - 2);
-
- gtk_draw_shadow (
- GTK_WIDGET (canvas)->style, drawable,
- GTK_STATE_NORMAL, GTK_SHADOW_OUT,
- x , -y1, col_width, ETHI_HEIGHT);
-
- {
- GdkRectangle clip;
- GdkFont *font = GTK_WIDGET (canvas)->style->font;
-
- clip.x = x + 2;
- clip.y = -y1 + 2;
- clip.width = col_width - 4;
- clip.height = ETHI_HEIGHT - 4;
- gdk_gc_set_clip_rectangle (gc, &clip);
+ draw_button (ethi, ecol, drawable, gc,
+ GTK_WIDGET (canvas)->style,
+ x, -y1, col_width, ethi->height);
- /*
- * FIXME: should be obvious
- */
- gdk_draw_text (drawable, font, gc, x, -y1 + 10, "TEST", 4);
-
- gdk_gc_set_clip_rectangle (gc, NULL);
- }
+ x += col_width;
}
}
@@ -164,10 +230,167 @@ ethi_point (GnomeCanvasItem *item, double x, double y, int cx, int cy,
return 0.0;
}
+/*
+ * is_pointer_on_division:
+ *
+ * Returns whether @pos is a column header division; If @the_total is not NULL,
+ * then the actual position is returned here. If @return_ecol is not NULL,
+ * then the ETableCol that actually contains this point is returned here
+ */
+static gboolean
+is_pointer_on_division (ETableHeaderItem *ethi, int pos, int *the_total, int *return_col)
+{
+ const int cols = e_table_header_count (ethi->eth);
+ int col, total;
+
+ total = 0;
+ for (col = 0; col < cols; col++){
+ ETableCol *ecol = e_table_header_get_column (ethi->eth, col);
+
+ total += ecol->width;
+
+ if ((total - TOLERANCE < pos ) && (pos < total + TOLERANCE)){
+ if (return_col)
+ *return_col = col;
+ if (the_total)
+ *the_total = total;
+
+ return TRUE;
+ }
+
+ if (total > pos + TOLERANCE)
+ return FALSE;
+ }
+
+ return FALSE;
+}
+
+#define convert(c,sx,sy,x,y) gnome_canvas_w2c (c,sx,sy,x,y)
+
+static void
+set_cursor (ETableHeaderItem *ethi, int pos)
+{
+ GtkWidget *canvas = GTK_WIDGET (GNOME_CANVAS_ITEM (ethi)->canvas);
+
+ /* We might be invoked before we are realized */
+ if (!canvas->window)
+ return;
+
+ if (is_pointer_on_division (ethi, pos, NULL, NULL))
+ e_cursor_set (canvas->window, E_CURSOR_SIZE_X);
+ else
+ e_cursor_set (canvas->window, E_CURSOR_ARROW);
+}
+
+static void
+ethi_request_redraw (ETableHeaderItem *ethi)
+{
+ GnomeCanvas *canvas = GNOME_CANVAS_ITEM (ethi)->canvas;
+
+ /*
+ * request a redraw
+ */
+ gnome_canvas_request_redraw (
+ canvas, ethi->x1, ethi->y1, INT_MAX, ethi->x1 + ethi->height);
+}
+
+static void
+ethi_end_resize (ETableHeaderItem *ethi, int new_size)
+{
+ e_table_header_set_size (ethi->eth, ethi->resize_col, new_size);
+
+ if (ethi->resize_guide){
+#warning Fix this
+ /* gtk_object_destroy (ethi->resize_guide);*/
+ ethi->resize_guide = NULL;
+ }
+ ethi->resize_col = -1;
+ ethi_request_redraw (ethi);
+}
+
+/*
+ * Handles the events on the ETableHeaderItem, particularly it handles resizing
+ */
static int
ethi_event (GnomeCanvasItem *item, GdkEvent *e)
{
+ ETableHeaderItem *ethi = E_TABLE_HEADER_ITEM (item);
+ GnomeCanvas *canvas = item->canvas;
+ const gboolean resizing = ETHI_RESIZING (ethi);
+ int x, y, start, col;
+
switch (e->type){
+ case GDK_ENTER_NOTIFY:
+ convert (canvas, e->crossing.x, e->crossing.y, &x, &y);
+ set_cursor (ethi, x);
+ break;
+
+ case GDK_MOTION_NOTIFY:
+ convert (canvas, e->motion.x, e->motion.y, &x, &y);
+ if (resizing){
+ if (ethi->resize_guide == NULL){
+ /* Quick hack until I actually bind the views */
+ ethi->resize_guide = GINT_TO_POINTER (1);
+ gnome_canvas_item_grab (item,
+ GDK_POINTER_MOTION_MASK |
+ GDK_BUTTON_RELEASE_MASK,
+ e_cursor_get (E_CURSOR_SIZE_X),
+ e->button.time);
+ }
+
+ if (x - ethi->resize_start_pos <= 0)
+ break;
+
+ ethi->resize_width = x - ethi->resize_start_pos;
+
+ ethi_request_redraw (ethi);
+ } else
+ set_cursor (ethi, x);
+ break;
+
+ case GDK_BUTTON_PRESS:
+ convert (canvas, e->button.x, e->button.y, &x, &y);
+
+ if (is_pointer_on_division (ethi, x, &start, &col)){
+ ETableCol *ecol;
+
+ /*
+ * Record the important bits.
+ *
+ * By setting resize_pos to a non -1 value,
+ * we know that we are being resized (used in the
+ * other event handlers).
+ */
+ ecol = e_table_header_get_column (ethi->eth, col);
+ ethi->resize_col = col;
+ ethi->resize_width = ecol->width;
+ ethi->resize_start_pos = start - ecol->width;
+ }
+ break;
+
+ case GDK_2BUTTON_PRESS:
+ if (!resizing)
+ break;
+
+ if (e->button.button != 1)
+ break;
+
+ printf ("Resize this guy\n");
+ break;
+
+ case GDK_BUTTON_RELEASE: {
+ gboolean needs_ungrab = FALSE;
+
+ if (ethi->resize_col != -1){
+ needs_ungrab = (ethi->resize_guide != NULL);
+ ethi_end_resize (ethi, ethi->resize_width);
+ }
+ if (needs_ungrab)
+ gnome_canvas_item_ungrab (item, e->button.time);
+
+ break;
+ }
+
default:
return FALSE;
}
@@ -179,7 +402,7 @@ ethi_class_init (GtkObjectClass *object_class)
{
GnomeCanvasItemClass *item_class = (GnomeCanvasItemClass *) object_class;
- ethi_parent_class = gtk_type_class (gnome_canvas_item_get_type ());
+ ethi_parent_class = gtk_type_class (PARENT_OBJECT_TYPE);
object_class->destroy = ethi_destroy;
object_class->set_arg = ethi_set_arg;
@@ -193,11 +416,21 @@ ethi_class_init (GtkObjectClass *object_class)
gtk_object_add_arg_type ("ETableHeaderItem::ETableHeader", GTK_TYPE_POINTER,
GTK_ARG_WRITABLE, ARG_TABLE_HEADER);
+ gtk_object_add_arg_type ("ETableHeaderItem::x", GTK_TYPE_INT,
+ GTK_ARG_WRITABLE, ARG_TABLE_X);
+ gtk_object_add_arg_type ("ETableHeaderItem::y", GTK_TYPE_INT,
+ GTK_ARG_WRITABLE, ARG_TABLE_Y);
+ gtk_object_add_arg_type ("ETableHeaderItem::fontset", GTK_TYPE_STRING,
+ GTK_ARG_WRITABLE, ARG_TABLE_FONTSET);
}
static void
ethi_init (GnomeCanvasItem *item)
{
+ ETableHeaderItem *ethi = E_TABLE_HEADER_ITEM (item);
+
+ ethi->resize_col = -1;
+
item->x1 = 0;
item->y1 = 0;
item->x2 = 0;