/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/*
* e-cell-progress.c - Progress display cell object.
* Copyright 1999-2002, Ximian, Inc.
* Copyright 2001, 2002, Krisztian Pifko <monsta@users.sourceforge.net>
*
* Authors:
* Krisztian Pifko <monsta@users.sourceforge.net>
*
* A cell type for displaying progress bars.
*
* Derived from ECellToggle of Miguel de Icaza <miguel@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.
*/
#include <config.h>
#include <string.h>
#include <gdk/gdkkeysyms.h>
#include <gtk/gtk.h>
#include <libgnomecanvas/gnome-canvas.h>
#include "e-util/e-util.h"
#include "e-cell-progress.h"
#include "e-table-item.h"
#define PARENT_TYPE e_cell_get_type ()
typedef struct {
ECellView cell_view;
GdkGC *gc;
GnomeCanvas *canvas;
} ECellProgressView;
static ECellClass *parent_class;
static void
eprog_queue_redraw (ECellProgressView *text_view, int view_col, int view_row)
{
e_table_item_redraw_range (
text_view->cell_view.e_table_item_view,
view_col, view_row, view_col, view_row);
}
/*
* ECell::realize method
*/
static ECellView *
eprog_new_view (ECell *ecell, ETableModel *table_model, void *e_table_item_view)
{
ECellProgressView *progress_view = g_new0 (ECellProgressView, 1);
ETableItem *eti = E_TABLE_ITEM (e_table_item_view);
GnomeCanvas *canvas = GNOME_CANVAS_ITEM (eti)->canvas;
progress_view->cell_view.ecell = ecell;
progress_view->cell_view.e_table_model = table_model;
progress_view->cell_view.e_table_item_view = e_table_item_view;
progress_view->canvas = canvas;
return (ECellView *) progress_view;
}
static void
eprog_kill_view (ECellView *ecell_view)
{
g_free (ecell_view);
}
static void
eprog_realize (ECellView *ecell_view)
{
ECellProgressView *progress_view = (ECellProgressView *) ecell_view;
progress_view->gc = gdk_gc_new (GTK_WIDGET (progress_view->canvas)->window);
}
/*
* ECell::unrealize method
*/
static void
eprog_unrealize (ECellView *ecv)
{
ECellProgressView *progress_view = (ECellProgressView *) ecv;
gdk_gc_unref (progress_view->gc);
progress_view->gc = NULL;
}
static void
eprog_clear (ECellProgress *progress)
{
memset(progress->buffer,0x00,progress->width*progress->height*4);
}
static void
eprog_draw_border (ECellProgress *progress, guchar red, guchar green, guchar blue)
{
gint i, j, w4, p4, pw4, wpb4;
/*
* some speedup
*/
w4=progress->width*4;
p4=progress->padding*4;
pw4=w4*progress->padding;
wpb4=(progress->width-progress->padding-progress->border)*4;
for (i=progress->padding*4;i<(progress->width-progress->padding)*4;i+=4){
for (j=0;j<progress->border;j++){
progress->buffer[pw4+j*w4+i]=red;
progress->buffer[pw4+j*w4+i+1]=green;
progress->buffer[pw4+j*w4+i+2]=blue;
progress->buffer[pw4+j*w4+i+3]=255;
progress->buffer[(progress->height-1-progress->padding)*w4-j*w4+i]=red;
progress->buffer[(progress->height-1-progress->padding)*w4-j*w4+i+1]=green;
progress->buffer[(progress->height-1-progress->padding)*w4-j*w4+i+2]=blue;
progress->buffer[(progress->height-1-progress->padding)*w4-j*w4+i+3]=255;
}
}
for (i=progress->padding+progress->border;i<progress->height-progress->padding-progress->border;i++){
for (j=0;j<4*progress->border;j+=4){
progress->buffer[p4+i*w4+j]=red;
progress->buffer[p4+i*w4+j+1]=green;
progress->buffer[p4+i*w4+j+2]=blue;
progress->buffer[p4+i*w4+j+3]=255;
progress->buffer[i*w4+wpb4+j]=red;
progress->buffer[i*w4+wpb4+j+1]=green;
progress->buffer[i*w4+wpb4+j+2]=blue;
progress->buffer[i*w4+wpb4+j+3]=255;
}
}
}
static void
eprog_draw_bar (ECellProgress *progress, guchar red, guchar green, guchar blue, gint value)
{
gint i, j, w;
w=value*(progress->width-2*(progress->padding+progress->border+1))/progress->max;
for (i=(progress->padding+progress->border+1)*4;i<(progress->padding+progress->border+1+w)*4;i+=4){
for (j=0;j<progress->height-2*(progress->padding+progress->border+1);j++){
progress->buffer[(progress->width*(progress->padding+progress->border+1)*4)+j*progress->width*4+i]=red;
progress->buffer[(progress->width*(progress->padding+progress->border+1)*4)+j*progress->width*4+i+1]=green;
progress->buffer[(progress->width*(progress->padding+progress->border+1)*4)+j*progress->width*4+i+2]=blue;
progress->buffer[(progress->width*(progress->padding+progress->border+1)*4)+j*progress->width*4+i+3]=255;
}
}
}
/*
* ECell::draw method
*/
static void
eprog_draw (ECellView *ecell_view, GdkDrawable *drawable,
int model_col, int view_col, int row, ECellFlags flags,
int x1, int y1, int x2, int y2)
{
ECellProgress *progress = E_CELL_PROGRESS (ecell_view->ecell);
int x, y;
const int value = GPOINTER_TO_INT (
e_table_model_value_at (ecell_view->e_table_model, model_col, row));
if ((value > progress->max)||(value < progress->min)){
g_warning ("Value from the table model is %d, the states we support are [%d..%d]\n",
value, progress->min, progress->max);
return;
}
if ((x2 - x1) < progress->width){
x = x1;
} else {
x = x1 + ((x2 - x1) - progress->width) / 2;
}
if ((y2 - y1) < progress->height){
y = y1;
} else {
y = y1 + ((y2 - y1) - progress->height) / 2;
}
eprog_clear(progress);
eprog_draw_border(progress, progress->red, progress->green, progress->blue);
eprog_draw_bar(progress, progress->red, progress->green, progress->blue, value);
gdk_pixbuf_render_to_drawable_alpha (progress->image, drawable,
0, 0,
x, y,
progress->width, progress->height,
GDK_PIXBUF_ALPHA_BILEVEL,
128,
GDK_RGB_DITHER_NORMAL,
x, y);
}
static void
eprog_set_value (ECellProgressView *progress_view, int model_col, int view_col, int row, int value)
{
ECell *ecell = progress_view->cell_view.ecell;
ECellProgress *progress = E_CELL_PROGRESS (ecell);
if (value > progress->max){
value = progress->max;
}else if (value < progress->min){
value = progress->min;
}
e_table_model_set_value_at (progress_view->cell_view.e_table_model,
model_col, row, GINT_TO_POINTER (value));
eprog_queue_redraw (progress_view, view_col, row);
}
/*
* ECell::event method
*/
static gint
eprog_event (ECellView *ecell_view, GdkEvent *event, int model_col, int view_col, int row, ECellFlags flags, ECellActions *actions)
{
ECellProgressView *progress_view = (ECellProgressView *) ecell_view;
void *_value = e_table_model_value_at (ecell_view->e_table_model, model_col, row);
const int value = GPOINTER_TO_INT (_value);
#if 0
if (!(flags & E_CELL_EDITING))
return FALSE;
#endif
switch (event->type){
case GDK_KEY_PRESS:
if (event->key.keyval != GDK_space)
return FALSE;
/* Fall through */
case GDK_BUTTON_PRESS:
if (!e_table_model_is_cell_editable(ecell_view->e_table_model, model_col, row))
return FALSE;
eprog_set_value (progress_view, model_col, view_col, row, value + 1);
return TRUE;
default:
return FALSE;
}
}
/*
* ECell::height method
*/
static int
eprog_height (ECellView *ecell_view, int model_col, int view_col, int row)
{
ECellProgress *progress = E_CELL_PROGRESS (ecell_view->ecell);
return progress->height;
}
/*
* ECell::max_width method
*/
static int
eprog_max_width (ECellView *ecell_view, int model_col, int view_col)
{
ECellProgress *progress = E_CELL_PROGRESS (ecell_view->ecell);
return progress->width;
}
static void
eprog_dispose (GObject *object)
{
ECellProgress *eprog = E_CELL_PROGRESS (object);
gdk_pixbuf_unref (eprog->image);
g_free (eprog->image);
g_free (eprog->buffer);
G_OBJECT_CLASS (parent_class)->dispose (object);
}
static void
e_cell_progress_class_init (GObjectClass *object_class)
{
ECellClass *ecc = (ECellClass *) object_class;
object_class->dispose = eprog_dispose;
ecc->new_view = eprog_new_view;
ecc->kill_view = eprog_kill_view;
ecc->realize = eprog_realize;
ecc->unrealize = eprog_unrealize;
ecc->draw = eprog_draw;
ecc->event = eprog_event;
ecc->height = eprog_height;
ecc->max_width = eprog_max_width;
parent_class = g_type_class_ref (PARENT_TYPE);
}
E_MAKE_TYPE(e_cell_progress, "ECellProgress", ECellProgress, e_cell_progress_class_init, NULL, PARENT_TYPE)
/**
* e_cell_progress_construct:
* @eprog: a fresh ECellProgress object
* @padding: number of pixels used as a padding
* @border: number of pixels used as a border
* @min: the minimum value
* @max: the maximum value
* @width: the width of the progress bar in pixels
* @height: the height of the progress bar in pixels
* @red: the red component of the progress bars rgb color
* @green: the green component of the progress bars rgb color
* @blue: the blue component of the progress bars rgb color
*
* Constructs the @eprog object with the arguments
*/
void
e_cell_progress_construct (ECellProgress *eprog, int padding, int border, int min, int max, int width, int height, guchar red, guchar green, guchar blue)
{
eprog->padding = padding;
eprog->border = border;
eprog->min = min;
eprog->max = max;
eprog->red = red;
eprog->green = green;
eprog->blue = blue;
eprog->width = (width<((padding+border)*2+5)) ? ((padding+border)*2+5) : width;
eprog->height = (height<((padding+border)*2+5)) ? ((padding+border)*2+5) : height;
eprog->buffer=g_new(guchar, eprog->width*eprog->height*4);
eprog_clear(eprog);
eprog_draw_border(eprog, red, green, blue);
eprog->image = gdk_pixbuf_new_from_data (eprog->buffer,GDK_COLORSPACE_RGB, TRUE, 8, eprog->width, eprog->height, eprog->width*4, NULL, NULL);
}
/**
* e_cell_progress_new:
* @min: the minimum value
* @max: the maximum value
* @width: the width of the progress bar in pixels
* @height: the height of the progress bar in pixels
*
* Creates a new ECell renderer that can be used to render progress
* bars displaying the percentage of the current value between min
* and max.
*
* Returns: an ECell object that can be used to render progress cells.
*/
ECell *
e_cell_progress_new (int min, int max, int width, int height)
{
ECellProgress *eprog = g_object_new (E_CELL_PROGRESS_TYPE, NULL);
e_cell_progress_construct (eprog, 1, 1, min, max, (width<9) ? 9 : width, (height<9) ? 9 : height, 0x00, 0x00, 0x00);
return (ECell *) eprog;
}
/**
* e_cell_progress_set_padding:
* @eprog: an ECellProgress object
* @padding: number of pixels used as a padding
*
* Sets the padding around the progress bar in the cell.
*/
void
e_cell_progress_set_padding (ECellProgress *eprog, int padding)
{
eprog->padding = padding;
eprog->width = (eprog->width<((padding+eprog->border)*2+5)) ? ((padding+eprog->border)*2+5) : eprog->width;
eprog->height = (eprog->height<((padding+eprog->border)*2+5)) ? ((padding+eprog->border)*2+5) : eprog->height;
g_free (eprog->buffer);
eprog->buffer=g_new (guchar, eprog->width*eprog->height*4);
eprog_clear (eprog);
eprog_draw_border (eprog, eprog->red, eprog->green, eprog->blue);
eprog->image = gdk_pixbuf_new_from_data (eprog->buffer,GDK_COLORSPACE_RGB, TRUE, 8, eprog->width, eprog->height, eprog->width*4, NULL, NULL);
}
/**
* e_cell_progress_set_border:
* @eprog: an ECellProgress object
* @border: number of pixels used as a border
*
* Sets the border around the progress bar in the cell.
*/
void
e_cell_progress_set_border (ECellProgress *eprog, int border)
{
eprog->border = border;
eprog->width = (eprog->width<((eprog->padding+border)*2+5)) ? ((eprog->padding+border)*2+5) : eprog->width;
eprog->height = (eprog->height<((eprog->padding+border)*2+5)) ? ((eprog->padding+border)*2+5) : eprog->height;
g_free (eprog->buffer);
eprog->buffer=g_new (guchar, eprog->width*eprog->height*4);
eprog_clear (eprog);
eprog_draw_border (eprog, eprog->red, eprog->green, eprog->blue);
eprog->image = gdk_pixbuf_new_from_data (eprog->buffer,GDK_COLORSPACE_RGB, TRUE, 8, eprog->width, eprog->height, eprog->width*4, NULL, NULL);
}
/**
* e_cell_progress_set_color:
* @eprog: a fresh ECellProgress object
* @red: the red component of the progress bars rgb color
* @green: the green component of the progress bars rgb color
* @blue: the blue component of the progress bars rgb color
*/
void
e_cell_progress_set_color (ECellProgress *eprog, guchar red, guchar green, guchar blue)
{
eprog->red = red;
eprog->green = green;
eprog->blue = blue;
eprog_clear (eprog);
eprog_draw_border (eprog, red, green, blue);
}
