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Commit 0ce8428a authored by BST 1998 Andy Thomas's avatar BST 1998 Andy Thomas Committed by Andy Thomas
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app/gradients.c. Added gradient preview and a couple of buttons. 


Tue Oct 13 00:27:21 BST 1998 Andy Thomas <alt@picnic.demon.co.uk>

	app/gradients.c. Added gradient preview and a couple of buttons.
parent d99531f4
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ChangeLog
View file @ 0ce8428a
Tue Oct 13 00:27:21 BST 1998 Andy Thomas <alt@picnic.demon.co.uk>
app/gradients.c. Added gradient preview and a couple of buttons.
Mon Oct 12 10:25:05 EEST 1998 Tuomas Kuosmanen <tigert@gimp.org>
* plug-ins/MapObject/mapobject_main.c: changed the
......
app/gradient.c
View file @ 0ce8428a
......@@ -20,7 +20,9 @@
*/
/* hof: Hofer Wolfgang, 1998.01.27 avoid resize bug by keeping
/* alt: Added previews and some other buttons to gradient dialog.
*
* hof: Hofer Wolfgang, 1998.01.27 avoid resize bug by keeping
* preview widgetsize constant.
* hof: Hofer Wolfgang, 1997.10.17 Added "Load From FG color"
*/
......@@ -186,6 +188,7 @@
#define GRAD_CONTROL_HEIGHT 10
#define GRAD_CHECK_SIZE 8
#define GRAD_CHECK_SIZE_SM 4
#define GRAD_CHECK_DARK (1.0 / 3.0)
#define GRAD_CHECK_LIGHT (2.0 / 3.0)
......@@ -251,7 +254,7 @@ typedef struct _gradient_t {
grad_segment_t *last_visited;
int dirty;
char *filename;
GtkWidget *list_item;
GdkPixmap *pixmap;
} gradient_t;
......@@ -266,8 +269,9 @@ typedef enum {
typedef struct {
GtkWidget *shell;
GdkGC *gc;
GtkWidget *hint_label;
GtkWidget *list;
GtkWidget *clist;
GtkWidget *scrollbar;
GtkWidget *preview;
GtkWidget *control;
......@@ -377,21 +381,28 @@ static GtkWidget *ed_create_button(gchar *label, double xalign, double yalign,
static void ed_set_hint(char *str);
static void ed_set_list_of_gradients(void);
static int ed_set_list_of_gradients(void);
static void ed_insert_in_gradients_listbox(gradient_t *grad, int pos, int select);
static void ed_list_item_update(GtkWidget *widget, gpointer data);
static void ed_list_item_update(GtkWidget *widget,
gint row,
gint column,
GdkEventButton *event,
gpointer data);
static void ed_initialize_saved_colors(void);
static gint ed_close_callback(GtkWidget *widget, gpointer client_data);
static void ed_refresh_callback(GtkWidget *widget, gpointer client_data);
static void ed_new_gradient_callback(GtkWidget *widget, gpointer client_data);
static void ed_do_rename_gradient_callback(GtkWidget *widget, gpointer client_data, gpointer call_data);
static void ed_do_new_gradient_callback(GtkWidget *widget, gpointer client_data, gpointer call_data);
static void ed_copy_gradient_callback(GtkWidget *widget, gpointer client_data);
static void ed_do_copy_gradient_callback(GtkWidget *widget, gpointer client_data, gpointer call_data);
static void ed_delete_gradient_callback(GtkWidget *widget, gpointer client_data);
static void ed_do_delete_gradient_callback(GtkWidget *widget, gpointer client_data);
static void ed_cancel_delete_gradient_callback(GtkWidget *widget, gpointer client_data);
static void ed_rename_grads_callback(GtkWidget *widget, gpointer client_data);
static void ed_save_grads_callback(GtkWidget *widget, gpointer client_data);
static void ed_save_pov_callback(GtkWidget *widget, gpointer client_data);
static void ed_do_save_pov_callback(GtkWidget *widget, gpointer client_data);
static void ed_cancel_save_pov_callback(GtkWidget *widget, gpointer client_data);
......@@ -524,6 +535,7 @@ static void grad_free_gradient(gradient_t *grad);
static void grad_free_gradients(void);
static void grad_load_gradient(char *filename);
static void grad_save_gradient(gradient_t *grad, char *filename);
static void grad_save_all(int need_free);
static gradient_t *grad_create_default_gradient(void);
......@@ -568,6 +580,7 @@ static Argument *gradients_sample_custom_invoker(Argument *args);
/***** Local variables *****/
GdkColor black;
static int num_gradients = 0;
static GSList *gradients_list = NULL; /* The list of gradients */
static gradient_t *curr_gradient = NULL; /* The active gradient */
......@@ -760,12 +773,13 @@ grad_create_gradient_editor(void)
GtkWidget *table;
GtkWidget *label;
GtkWidget *hbox;
GtkWidget *listbox;
GtkWidget *gvbox;
GtkWidget *button;
GtkWidget *frame;
GtkWidget *separator;
GdkColormap *colormap;
int i;
int select_pos;
/* If the editor already exists, just show it */
......@@ -843,21 +857,31 @@ grad_create_gradient_editor(void)
gtk_box_pack_start(GTK_BOX(vbox), hbox, TRUE, TRUE, 0);
gtk_widget_show(hbox);
listbox = gtk_scrolled_window_new(NULL, NULL);
gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(listbox),
GTK_POLICY_AUTOMATIC,
GTK_POLICY_ALWAYS);
gtk_widget_set_usize(listbox, GRAD_LIST_WIDTH, GRAD_LIST_HEIGHT);
gtk_box_pack_start(GTK_BOX(hbox), listbox, TRUE, TRUE, 0);
gtk_widget_show(listbox);
g_editor->list = gtk_list_new();
gtk_list_set_selection_mode(GTK_LIST(g_editor->list), GTK_SELECTION_BROWSE);
gtk_container_add(GTK_CONTAINER(listbox), g_editor->list);
gtk_container_set_focus_vadjustment(GTK_CONTAINER(g_editor->list),
gtk_scrolled_window_get_vadjustment(GTK_SCROLLED_WINDOW(listbox)));
GTK_WIDGET_UNSET_FLAGS(GTK_SCROLLED_WINDOW(listbox)->vscrollbar, GTK_CAN_FOCUS);
gtk_widget_show(g_editor->list);
/* clist preview of gradients */
g_editor->clist = gtk_clist_new(2);
gtk_clist_set_border(GTK_CLIST(g_editor->clist), GTK_SHADOW_IN);
gtk_clist_set_row_height(GTK_CLIST(g_editor->clist), 18);
gtk_clist_set_column_width(GTK_CLIST(g_editor->clist), 0, 52);
gtk_clist_set_column_title(GTK_CLIST(g_editor->clist), 0, "Gradient");
gtk_clist_set_column_title(GTK_CLIST(g_editor->clist), 1, "Name");
gtk_clist_column_titles_show(GTK_CLIST(g_editor->clist));
gtk_clist_set_policy(GTK_CLIST(g_editor->clist), GTK_POLICY_AUTOMATIC,
GTK_POLICY_AUTOMATIC);
gtk_box_pack_start(GTK_BOX(hbox), g_editor->clist, TRUE, TRUE, 0);
gtk_widget_show(g_editor->clist);
colormap = gtk_widget_get_colormap(g_editor->clist);
gdk_color_parse("black", &black);
gdk_color_alloc(colormap, &black);
gtk_signal_connect(GTK_OBJECT(g_editor->clist), "select_row",
GTK_SIGNAL_FUNC(ed_list_item_update),
(gpointer) NULL);
/* Buttons for gradient functions */
......@@ -888,6 +912,16 @@ grad_create_gradient_editor(void)
gtk_box_pack_start(GTK_BOX(gvbox), button, TRUE, TRUE, 0);
gtk_widget_show(button);
button = ed_create_button("Save Gradients", 0.0, 0.5,
(GtkSignalFunc) ed_save_grads_callback, NULL);
gtk_box_pack_start(GTK_BOX(gvbox), button, TRUE, TRUE, 0);
gtk_widget_show(button);
button = ed_create_button("Rename Gradient", 0.0, 0.5,
(GtkSignalFunc) ed_rename_grads_callback, NULL);
gtk_box_pack_start(GTK_BOX(gvbox), button, TRUE, TRUE, 0);
gtk_widget_show(button);
button = ed_create_button("Refresh gradients", 0.0, 0.5,
(GtkSignalFunc) ed_refresh_callback, NULL);
gtk_box_pack_start(GTK_BOX(gvbox), button, TRUE, TRUE, 0);
......@@ -1054,10 +1088,14 @@ grad_create_gradient_editor(void)
cpopup_create_main_menu();
/* Show everything */
ed_set_list_of_gradients();
gtk_widget_realize(g_editor->shell);
g_editor->gc = gdk_gc_new(g_editor->shell->window);
select_pos = ed_set_list_of_gradients();
gtk_widget_show(g_editor->shell);
if(select_pos != -1)
gtk_clist_moveto(GTK_CLIST(g_editor->clist),select_pos,0,0.0,0.0);
} /* grad_create_gradient_editor */
......@@ -1141,67 +1179,163 @@ ed_set_hint(char *str)
/*****/
static void
static int
ed_set_list_of_gradients(void)
{
GSList *list;
gradient_t *grad;
int n;
int select_pos = -1;
list = gradients_list;
n = 0;
gtk_clist_freeze(GTK_CLIST(g_editor->clist));
while (list) {
grad = list->data;
if (grad == curr_gradient)
if (grad == curr_gradient) {
ed_insert_in_gradients_listbox(grad, n, 1);
else
select_pos = n;
}
else {
ed_insert_in_gradients_listbox(grad, n, 0);
}
list = g_slist_next(list);
n++;
} /* while */
gtk_clist_thaw(GTK_CLIST(g_editor->clist));
return select_pos;
} /* ed_set_list_of_gradients */
/*****/
static void
fill_clist_prev(gradient_t *grad, guchar *buf, gint width, gint height, double left, double right)
{
guchar *p0, *p1,*even,*odd;
int x, y;
double dx, cur_x;
double r, g, b, a;
double c0, c1;
gradient_t *oldgrad = curr_gradient;
curr_gradient = grad;
dx = (right - left) / (width - 1);
cur_x = left;
p0 = even = g_malloc(width*3);
p1 = odd = g_malloc(width*3);
/* Create lines to fill the image */
for (x = 0; x < width; x++) {
grad_get_color_at(cur_x, &r, &g, &b, &a);
if ((x / GRAD_CHECK_SIZE_SM) & 1) {
c0 = GRAD_CHECK_LIGHT;
c1 = GRAD_CHECK_DARK;
} else {
c0 = GRAD_CHECK_DARK;
c1 = GRAD_CHECK_LIGHT;
} /* else */
*p0++ = (c0 + (r - c0) * a) * 255.0;
*p0++ = (c0 + (g - c0) * a) * 255.0;
*p0++ = (c0 + (b - c0) * a) * 255.0;
*p1++ = (c1 + (r - c1) * a) * 255.0;
*p1++ = (c1 + (g - c1) * a) * 255.0;
*p1++ = (c1 + (b - c1) * a) * 255.0;
cur_x += dx;
} /* for */
for (y = 0; y < height; y++)
{
if ((y / GRAD_CHECK_SIZE_SM) & 1)
{
memcpy(buf+(width*y*3),odd,width*3);
}
else
{
memcpy(buf+(width*y*3),even,width*3);
}
}
g_free(even);
g_free(odd);
curr_gradient = oldgrad;
}
/*****/
static void
draw_small_preview(gradient_t *grad,int pos)
{
char rgb_buf[48*16*3];
fill_clist_prev(grad,rgb_buf,48,16,0.0,1.0);
gdk_draw_rgb_image (grad->pixmap,
g_editor->gc,
0,
0,
48,
16,
GDK_RGB_DITHER_NORMAL,
rgb_buf,
48*3);
gdk_gc_set_foreground(g_editor->gc, &black);
gdk_draw_rectangle(grad->pixmap, g_editor->gc, FALSE, 0, 0, 47, 15);
gtk_clist_set_text(GTK_CLIST(g_editor->clist),pos,1,grad->name);
}
/*****/
static void
ed_insert_in_gradients_listbox(gradient_t *grad, int pos, int select)
{
GtkWidget *list_item;
GList *list;
char *string[2];
string[0] = NULL;
string[1] = grad->name;
list_item = gtk_list_item_new_with_label(grad->name);
grad->list_item = list_item;
gtk_signal_connect(GTK_OBJECT(list_item), "select",
(GtkSignalFunc) ed_list_item_update,
(gpointer) grad);
gtk_widget_show(list_item);
gtk_clist_insert(GTK_CLIST(g_editor->clist), pos,string);
list = g_list_append(NULL, list_item);
grad->pixmap = gdk_pixmap_new(g_editor->shell->window,
48, 16, gtk_widget_get_visual(g_editor->shell)->depth);
gtk_list_insert_items(GTK_LIST(g_editor->list), list, pos);
draw_small_preview(grad,pos);
gtk_clist_set_pixmap(GTK_CLIST(g_editor->clist), pos, 0, grad->pixmap, NULL);
if (select)
gtk_list_select_item(GTK_LIST(g_editor->list), pos);
{
gtk_clist_select_row(GTK_CLIST(g_editor->clist),pos,-1);
gtk_clist_moveto(GTK_CLIST(g_editor->clist),pos,0,0.5,0.0);
}
} /* ed_insert_in_gradients_listbox */
/*****/
static void
ed_list_item_update(GtkWidget *widget, gpointer data)
ed_list_item_update(GtkWidget *widget,
gint row,
gint column,
GdkEventButton *event,
gpointer data)
{
/* If this is not the selected item, do nothing */
if (widget->state != GTK_STATE_SELECTED)
return;
/* Update current gradient */
curr_gradient = (gradient_t *) data;
GSList* tmp = g_slist_nth(gradients_list,row);
curr_gradient = (gradient_t *)(tmp->data);
ed_update_editor(GRAD_UPDATE_PREVIEW | GRAD_RESET_CONTROL);
} /* ed_list_item_update */
......@@ -1331,13 +1465,64 @@ ed_do_new_gradient_callback(GtkWidget *widget, gpointer client_data, gpointer ca
/* Put new gradient in list */
pos = grad_insert_in_gradients_list(grad);
gtk_clist_freeze(GTK_CLIST(g_editor->clist));
ed_insert_in_gradients_listbox(grad, pos, 1);
gtk_clist_thaw(GTK_CLIST(g_editor->clist));
gtk_clist_moveto(GTK_CLIST(g_editor->clist),pos,0,0.5,0.0);
curr_gradient = grad;
ed_update_editor(GRAD_UPDATE_PREVIEW | GRAD_RESET_CONTROL);
} /* ed_do_new_gradient_callback */
/*****/
static void
ed_do_rename_gradient_callback(GtkWidget *widget, gpointer client_data, gpointer call_data)
{
gradient_t *grad = NULL;
char *gradient_name;
GSList *tmp;
int n;
gradient_name = (char *) call_data;
if (!gradient_name) {
g_message ("ed_do_rename_gradient_callback(): oops, received NULL in call_data");
return;
} /* if */
n = 0;
tmp = gradients_list;
while (tmp) {
grad = tmp->data;
if (strcmp(gradient_name, grad->name) <= 0)
break; /* We found the one we want */
n++;
tmp = g_slist_next(tmp);
} /* while */
if (!grad) {
g_message ("ed_do_rename_gradient_callback(): oops, can't find gradient to delete");
return;
} /* if */
grad->name = gradient_name; /* We don't need to copy since this memory is ours */
grad->dirty = 1;
/* Delete file and free gradient */
unlink(curr_gradient->filename);
grad->filename = build_user_filename(grad->name, gradient_path);
gtk_clist_set_text(GTK_CLIST(g_editor->clist),n,1,grad->name);
ed_update_editor(GRAD_UPDATE_PREVIEW | GRAD_RESET_CONTROL);
} /* ed_do_rename_gradient_callback */
/*****/
......@@ -1413,7 +1598,9 @@ ed_do_copy_gradient_callback(GtkWidget *widget, gpointer client_data, gpointer c
/* Put new gradient in list */
pos = grad_insert_in_gradients_list(grad);
gtk_clist_freeze(GTK_CLIST(g_editor->clist));
ed_insert_in_gradients_listbox(grad, pos, 1);
gtk_clist_thaw(GTK_CLIST(g_editor->clist));
curr_gradient = grad;
......@@ -1494,24 +1681,24 @@ ed_delete_gradient_callback(GtkWidget *widget, gpointer client_data)
static void
ed_do_delete_gradient_callback(GtkWidget *widget, gpointer client_data)
{
GList *list;
GSList *tmp;
int n;
int real_pos;
gradient_t *g;
GtkWidget *list_item;
gtk_widget_destroy(GTK_WIDGET(client_data));
gtk_widget_set_sensitive(g_editor->shell, TRUE);
/* See which gradient we will have to select once the current one is deleted */
n = 0;
real_pos = n = 0;
tmp = gradients_list;
while (tmp) {
g = tmp->data;
if (g == curr_gradient) {
real_pos = n;
if (tmp->next == NULL)
n--; /* Will have to select the *previous* one */
......@@ -1527,8 +1714,6 @@ ed_do_delete_gradient_callback(GtkWidget *widget, gpointer client_data)
/* Delete gradient from gradients list */
list_item = curr_gradient->list_item; /* Remember list item to delete it later */
gradients_list = g_slist_remove(gradients_list, curr_gradient);
/* Delete file and free gradient */
......@@ -1538,13 +1723,13 @@ ed_do_delete_gradient_callback(GtkWidget *widget, gpointer client_data)
/* Delete gradient from listbox */
list = g_list_append(NULL, list_item);
gtk_list_remove_items(GTK_LIST(g_editor->list), list);
gtk_clist_remove(GTK_CLIST(g_editor->clist), real_pos);
/* Select new gradient */
curr_gradient = g_slist_nth(gradients_list, n)->data;
gtk_list_select_item(GTK_LIST(g_editor->list), n);
gtk_clist_select_row(GTK_CLIST(g_editor->clist),n,-1);
gtk_clist_moveto(GTK_CLIST(g_editor->clist),n,0,0.5,0.0);
/* Update! */
......@@ -1561,6 +1746,28 @@ ed_cancel_delete_gradient_callback(GtkWidget *widget, gpointer client_data)
gtk_widget_set_sensitive(g_editor->shell, TRUE);
} /* ed_cancel_delete_gradient_callback */
/*****/
static void
ed_save_grads_callback(GtkWidget *widget, gpointer client_data)
{
grad_save_all(0);
}
/*****/
static void
ed_rename_grads_callback(GtkWidget *widget, gpointer client_data)
{
if(curr_gradient == NULL)
return;
query_string_box("Rename gradient",
"Enter a new name for the gradient",
curr_gradient->name,
ed_do_rename_gradient_callback, NULL);
}
/*****/
......@@ -1592,26 +1799,21 @@ ed_save_pov_callback(GtkWidget *widget, gpointer client_data)
static void
ed_refresh_callback(GtkWidget *widget, gpointer client_data)
{
GSList *node;
gradient_t *grad;
GList *list;
list = NULL;
for (node = gradients_list; node; node = g_slist_next(node)) {
grad = node->data;
list = g_list_append(list, grad->list_item);
}
gtk_list_remove_items(GTK_LIST(g_editor->list),list);
int select_pos;
gtk_clist_freeze(GTK_CLIST(g_editor->clist));
gtk_clist_clear(GTK_CLIST(g_editor->clist));
gtk_clist_thaw(GTK_CLIST(g_editor->clist));
grad_free_gradients();
gradients_init(FALSE);
ed_set_list_of_gradients();
select_pos = ed_set_list_of_gradients();
ed_update_editor(GRAD_UPDATE_PREVIEW | GRAD_RESET_CONTROL);
if(select_pos != -1)
gtk_clist_moveto(GTK_CLIST(g_editor->clist),select_pos,0,0.5,0.0);
} /* ed_refresh_callback */
/*****/
......@@ -1937,6 +2139,11 @@ prev_update(int recalculate)
GtkAdjustment *adjustment;
guint16 width, height;
guint16 pwidth, pheight;
GSList *tmp;
int n;
gradient_t *g;
static gradient_t *last_grad = NULL;
static int last_row = -1;
/* We only update if we can draw to the widget and a gradient is present */
......@@ -1993,6 +2200,26 @@ prev_update(int recalculate)
gtk_widget_draw(g_editor->preview, NULL);
} /* if */
if(last_grad != curr_gradient || last_row < 0) {
n = 0;
tmp = gradients_list;
while (tmp) {
g = tmp->data;
if (g == curr_gradient) {
break; /* We found the one we want */
} /* if */
n++; /* Next gradient */
tmp = g_slist_next(tmp);
} /* while */
last_grad = curr_gradient;
last_row = n;
} /* if */
draw_small_preview(curr_gradient,last_row);
} /* prev_update */
......@@ -5261,7 +5488,7 @@ grad_new_gradient(void)
grad->last_visited = NULL;
grad->dirty = 0;
grad->filename = NULL;
grad->list_item = NULL;
grad->pixmap = NULL;
return grad;
} /* grad_new_gradient */
......@@ -5290,7 +5517,7 @@ grad_free_gradient(gradient_t *grad)
/*****/
static void
grad_free_gradients(void)
grad_save_all(int need_free)
{
GSList *node;
gradient_t *grad;
......@@ -5305,11 +5532,20 @@ grad_free_gradients(void)
if (grad->dirty)
grad_save_gradient(grad, grad->filename);
grad_free_gradient(grad);
if(need_free)
grad_free_gradient(grad);
node = g_slist_next(node);
} /* while */
}
/*****/
static void
grad_free_gradients(void)
{