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1998-03-12 Federico Mena Quintero <federico@nuclecu.unam.mx>

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* gmc-chargrid.c: Changed the struct attr with pointers mess with
	something saner.
	Added an in_resize flag to avoid calling our internal signal
	handlers recursively.
	(gmc_char_grid_draw): Added proper draw handler for our case; the
	widget's window does not fill its allocation.
	(paint): New wrapper for update_region(); it converts window
	coordinates to row/column character coordinates.
	(gmc_char_grid_expose): Use paint().
This commit is contained in:
Miguel de Icaza 1998-03-13 00:56:24 +00:00
parent 6356184c04
commit 276761aa48
3 changed files with 104 additions and 119 deletions
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12
gnome/ChangeLog
View File

@ -1,3 +1,15 @@
1998-03-12 Federico Mena Quintero <federico@nuclecu.unam.mx>
* gmc-chargrid.c: Changed the struct attr with pointers mess with
something saner.
Added an in_resize flag to avoid calling our internal signal
handlers recursively.
(gmc_char_grid_draw): Added proper draw handler for our case; the
widget's window does not fill its allocation.
(paint): New wrapper for update_region(); it converts window
coordinates to row/column character coordinates.
(gmc_char_grid_expose): Use paint().
1998-03-11 Federico Mena Quintero <federico@nuclecu.unam.mx>
* gmc-chargrid.c (update_strip): Doh. Fixed painting of

209
gnome/gmc-chargrid.c
View File

@ -19,8 +19,10 @@
#define ATTRS(cgrid) ((struct attr *) cgrid->attrs)
struct attr {
GdkColor *fg;
GdkColor *bg;
gulong fg;
gulong bg;
int fg_set : 1;
int bg_set : 1;
};
@ -48,6 +50,8 @@ static void gmc_char_grid_size_request (GtkWidget *widget,
GtkRequisition *requisition);
static void gmc_char_grid_size_allocate (GtkWidget *widget,
GtkAllocation *allocation);
static void gmc_char_grid_draw (GtkWidget *widget,
GdkRectangle *area);
static gint gmc_char_grid_expose (GtkWidget *widget,
GdkEventExpose *event);
static void gmc_char_grid_real_size_changed (GmcCharGrid *cgrid,
@ -110,6 +114,7 @@ gmc_char_grid_class_init (GmcCharGridClass *class)
widget_class->realize = gmc_char_grid_realize;
widget_class->size_request = gmc_char_grid_size_request;
widget_class->size_allocate = gmc_char_grid_size_allocate;
widget_class->draw = gmc_char_grid_draw;
widget_class->expose_event = gmc_char_grid_expose;
class->size_changed = gmc_char_grid_real_size_changed;
@ -122,7 +127,7 @@ gmc_char_grid_init (GmcCharGrid *cgrid)
cgrid->height = 0;
cgrid->chars = NULL;
cgrid->attrs = NULL;
cgrid->frozen = 0;
cgrid->frozen = FALSE;
cgrid->font = NULL;
cgrid->gc = NULL;
cgrid->char_width = 0;
@ -143,28 +148,6 @@ gmc_char_grid_new (void)
return GTK_WIDGET (cgrid);
}
static void
free_attrs (GmcCharGrid *cgrid)
{
int i;
struct attr *attrs;
attrs = ATTRS (cgrid);
if (!cgrid->attrs)
return;
for (i = 0; i < (cgrid->width * cgrid->height); i++) {
if (attrs[i].fg)
g_free (attrs[i].fg);
if (attrs[i].bg)
g_free (attrs[i].bg);
}
g_free (attrs);
}
static void
gmc_char_grid_destroy (GtkObject *object)
{
@ -178,7 +161,8 @@ gmc_char_grid_destroy (GtkObject *object)
if (cgrid->chars)
g_free (cgrid->chars);
free_attrs (cgrid);
if (cgrid->attrs)
g_free (cgrid->attrs);
if (cgrid->font)
gdk_font_unref (cgrid->font);
@ -265,8 +249,7 @@ gmc_char_grid_size_allocate (GtkWidget *widget, GtkAllocation *allocation)
cgrid->width * cgrid->char_width,
cgrid->height * cgrid->char_height);
if ((w != cgrid->width) || (h != cgrid->height))
gmc_char_grid_set_size (cgrid, MAX (w, 1), MAX (h, 1));
gmc_char_grid_set_size (cgrid, MAX (w, 1), MAX (h, 1));
}
static void
@ -291,7 +274,7 @@ update_strip (GmcCharGrid *cgrid, int x, int y, int width)
while (i < width) {
first = i;
ocolor = attrs[i].bg ? attrs[i].bg->pixel : GTK_WIDGET (cgrid)->style->bg[GTK_STATE_NORMAL].pixel;
ocolor = attrs[i].bg_set ? attrs[i].bg : GTK_WIDGET (cgrid)->style->bg[GTK_STATE_NORMAL].pixel;
color = ocolor;
do {
@ -316,7 +299,7 @@ update_strip (GmcCharGrid *cgrid, int x, int y, int width)
while (i < width) {
first = i;
ocolor = attrs[i].fg ? attrs[i].fg->pixel : GTK_WIDGET (cgrid)->style->fg[GTK_STATE_NORMAL].pixel;
ocolor = attrs[i].fg_set ? attrs[i].fg : GTK_WIDGET (cgrid)->style->fg[GTK_STATE_NORMAL].pixel;
color = ocolor;
do {
@ -344,47 +327,79 @@ update_region (GmcCharGrid *cgrid, int x, int y, int width, int height)
if ((width == 0) || (height == 0))
return;
/* sanity checks */
g_assert ((x + width) <= cgrid->width);
g_assert ((y + height) <= cgrid->height);
for (i = 0; i < height; i++)
update_strip (cgrid, x, y + i, width);
}
static void
paint (GmcCharGrid *cgrid, GdkRectangle *area)
{
int x1, y1, x2, y2;
/* This logic is shamelessly ripped from gtkterm :-) - Federico */
if (area->width > 1)
area->width--;
else if (area->x > 0)
area->x--;
if (area->height > 1)
area->height--;
else if (area->y > 0)
area->y--;
x1 = area->x / cgrid->char_width;
y1 = area->y / cgrid->char_height;
x2 = (area->x + area->width) / cgrid->char_width;
y2 = (area->y + area->height) / cgrid->char_height;
update_region (cgrid, x1, y1, (x2 - x1) + 1, (y2 - y1) + 1);
}
static void
gmc_char_grid_draw (GtkWidget *widget, GdkRectangle *area)
{
GmcCharGrid *cgrid;
GdkRectangle w_area;
GdkRectangle p_area;
g_return_if_fail (widget != NULL);
g_return_if_fail (GMC_IS_CHAR_GRID (widget));
g_return_if_fail (area != NULL);
if (GTK_WIDGET_DRAWABLE (widget)) {
cgrid = GMC_CHAR_GRID (widget);
/* Offset the area because the window does not fill thea allocation */
area->x -= widget->allocation.x + (widget->allocation.width - cgrid->char_width * cgrid->width) / 2;
area->y -= widget->allocation.y + (widget->allocation.height - cgrid->char_height * cgrid->height) / 2;
w_area.x = 0;
w_area.y = 0;
w_area.width = cgrid->char_width * cgrid->width;
w_area.height = cgrid->char_height * cgrid->height;
if (gdk_rectangle_intersect (area, &w_area, &p_area))
paint (cgrid, &p_area);
}
}
static gint
gmc_char_grid_expose (GtkWidget *widget, GdkEventExpose *event)
{
GmcCharGrid *cgrid;
GdkRectangle *area;
int x1, y1, x2, y2;
gint w, h;
g_return_val_if_fail (widget != NULL, FALSE);
g_return_val_if_fail (GMC_IS_CHAR_GRID (widget), FALSE);
g_return_val_if_fail (event != NULL, FALSE);
if (GTK_WIDGET_DRAWABLE (widget)) {
cgrid = GMC_CHAR_GRID (widget);
area = &event->area;
/* This logic is shamelessly ripped from gtkterm :-) - Federico */
if (area->width > 1)
area->width--;
else if (area->x > 0)
area->x--;
if (area->height > 1)
area->height--;
else if (area->y > 0)
area->y--;
x1 = area->x / cgrid->char_width;
y1 = area->y / cgrid->char_height;
x2 = (area->x + area->width) / cgrid->char_width;
y2 = (area->y + area->height) / cgrid->char_height;
update_region (cgrid, x1, y1, (x2 - x1) + 1, (y2 - y1) + 1);
}
if (GTK_WIDGET_DRAWABLE (widget))
paint (GMC_CHAR_GRID (widget), &event->area);
return FALSE;
}
@ -412,17 +427,8 @@ gmc_char_grid_clear (GmcCharGrid *cgrid, int x, int y, int width, int height, Gd
for (xx = x1; xx < x2; xx++) {
ch[xx] = ' ';
if (bg) {
if (!attrs[xx].bg)
attrs[xx].bg = g_new (GdkColor, 1);
*attrs[xx].bg = *bg;
} else {
if (attrs[xx].bg)
g_free (attrs[xx].bg);
attrs[xx].bg = NULL;
}
attrs[xx].bg = bg ? bg->pixel : 0;
attrs[xx].bg_set = bg ? TRUE : FALSE;
}
ch += cgrid->width;
@ -451,29 +457,11 @@ gmc_char_grid_put_char (GmcCharGrid *cgrid, int x, int y, GdkColor *fg, GdkColor
*chars = ch;
if (fg) {
if (!attrs->fg)
attrs->fg = g_new (GdkColor, 1);
attrs->fg = fg ? fg->pixel : 0;
attrs->fg_set = fg ? TRUE : FALSE;
*attrs->fg = *fg;
} else {
if (attrs->fg)
g_free (attrs->fg);
attrs->fg = NULL;
}
if (bg) {
if (!attrs->bg)
attrs->bg = g_new (GdkColor, 1);
*attrs->bg = *bg;
} else {
if (attrs->bg)
g_free (attrs->bg);
attrs->bg = NULL;
}
attrs->bg = bg ? bg->pixel : 0;
attrs->bg_set = bg ? TRUE : FALSE;
if (GTK_WIDGET_DRAWABLE (cgrid) && !cgrid->frozen)
update_region (cgrid, x, y, 1, 1);
@ -508,29 +496,11 @@ gmc_char_grid_put_text (GmcCharGrid *cgrid, int x, int y, GdkColor *fg, GdkColor
for (i = 0, pos = x; (i < length) && (pos < cgrid->width); i++, pos++) {
*chars++ = *text++;
if (fg) {
if (!attrs->fg)
attrs->fg = g_new (GdkColor, 1);
attrs->fg = fg ? fg->pixel : 0;
attrs->fg_set = fg ? TRUE : FALSE;
*attrs->fg = *fg;
} else {
if (attrs->fg)
g_free (attrs->fg);
attrs->fg = NULL;
}
if (bg) {
if (!attrs->bg)
attrs->bg = g_new (GdkColor, 1);
*attrs->bg = *bg;
} else {
if (attrs->bg)
g_free (attrs->bg);
attrs->bg = NULL;
}
attrs->bg = bg ? bg->pixel : 0;
attrs->bg_set = bg ? TRUE : FALSE;
attrs++;
}
@ -627,7 +597,8 @@ gmc_char_grid_real_size_changed (GmcCharGrid *cgrid, guint width, guint height)
if (cgrid->chars)
g_free (cgrid->chars);
free_attrs (cgrid);
if (cgrid->attrs)
g_free (cgrid->attrs);
cgrid->width = width;
cgrid->height = height;
@ -640,8 +611,10 @@ gmc_char_grid_real_size_changed (GmcCharGrid *cgrid, guint width, guint height)
for (i = 0; i < (width * height); i++) {
chars[i] = ' ';
attrs[i].fg = NULL;
attrs[i].bg = NULL;
attrs[i].fg = 0;
attrs[i].bg = 0;
attrs[i].fg_set = FALSE;
attrs[i].bg_set = FALSE;
}
gtk_widget_queue_resize (GTK_WIDGET (cgrid));

2
gnome/gmc-chargrid.h
View File

@ -34,7 +34,7 @@ struct _GmcCharGrid {
void *chars;
void *attrs;
int frozen;
int frozen : 1;
GdkFont *font;
GdkGC *gc;