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plug-ins: port CML Explorer to cairo

This commit is contained in:
Mikael Magnusson 2010-10-31 16:32:17 +01:00 committed by Michael Natterer
parent dbf1d49efe
commit 16f5727e59
1 changed files with 52 additions and 23 deletions
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75
plug-ins/common/cml-explorer.c
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@ -405,6 +405,10 @@ const GimpPlugInInfo PLUG_IN_INFO =
static GtkWidget *preview;
static WidgetEntry widget_pointers[4][CML_PARAM_NUM];
static guchar *img;
static gint img_stride;
static cairo_surface_t *buffer;
typedef struct
{
GtkWidget *widget;
@ -412,6 +416,7 @@ typedef struct
} CML_sensitive_widget_table;
#define RANDOM_SENSITIVES_NUM 5
#define GRAPHSIZE 256
static CML_sensitive_widget_table random_sensitives[RANDOM_SENSITIVES_NUM] =
{
@ -1510,17 +1515,26 @@ CML_explorer_dialog (void)
CML_initial_value_sensitives_update ();
gtk_widget_show (dialog);
img_stride = cairo_format_stride_for_width (CAIRO_FORMAT_RGB24, GRAPHSIZE);
img = g_malloc0 (img_stride * GRAPHSIZE);
buffer = cairo_image_surface_create_for_data (img, CAIRO_FORMAT_RGB24,
GRAPHSIZE,
GRAPHSIZE,
img_stride);
/* Displaying preview might takes a long time. Thus, first, dialog itself
* should be shown before making preview in it.
*/
gtk_widget_show (dialog);
CML_preview_defer = FALSE;
preview_update ();
run = (gimp_dialog_run (GIMP_DIALOG (dialog)) == GTK_RESPONSE_OK);
gtk_widget_destroy (dialog);
g_free (img);
return run;
}
@ -1757,53 +1771,68 @@ preview_update (void)
static gboolean
function_graph_expose (GtkWidget *widget,
GdkEventExpose *ev,
GdkEventExpose *event,
gpointer *data)
{
GtkStyle *style = gtk_widget_get_style (widget);
gint x, y, last_y;
gint x, y;
gint rgbi[3];
guchar *buffer;
gint channel_id = GPOINTER_TO_INT (data[0]);
CML_PARAM *param = data[1];
cairo_t *cr;
buffer = g_new (guchar, 256*256*3);
for (x = 0; x < 256; x++)
cr = gdk_cairo_create (gtk_widget_get_window (widget));
gdk_cairo_region (cr, event->region);
cairo_clip (cr);
cairo_set_line_width (cr, 1.0);
cairo_surface_flush (buffer);
for (x = 0; x < GRAPHSIZE; x++)
{
/* hue */
rgbi[0] = rgbi[1] = rgbi[2] = 127;
if ((0 <= channel_id) && (channel_id <= 2))
rgbi[channel_id] = CANNONIZE ((*param), ((gdouble) x / (gdouble) 255));
gimp_hsv_to_rgb_int (rgbi, rgbi+1, rgbi+2);
for (y = 0; y < 256; y++)
for (y = 0; y < GRAPHSIZE; y++)
{
buffer[(y*256+x)*3+0] = rgbi[0];
buffer[(y*256+x)*3+1] = rgbi[1];
buffer[(y*256+x)*3+2] = rgbi[2];
GIMP_CAIRO_RGB24_SET_PIXEL((img+(y*img_stride+x*4)),
rgbi[0],
rgbi[1],
rgbi[2]);
}
}
gdk_draw_rgb_image (gtk_widget_get_window (widget), style->black_gc,
0, 0, 256, 256,
GDK_RGB_DITHER_NORMAL,
buffer,
3 * 256);
cairo_surface_mark_dirty (buffer);
g_free (buffer);
cairo_set_source_surface (cr, buffer, 0.0, 0.0);
gdk_draw_line (gtk_widget_get_window (widget), style->white_gc, 0,255, 255, 0);
cairo_paint (cr);
cairo_translate (cr, 0.5, 0.5);
cairo_move_to (cr, 0, 255);
cairo_line_to (cr, 255, 0);
gdk_cairo_set_source_color (cr, &style->white);
cairo_stroke (cr);
y = 255 * CLAMP (logistic_function (param, 0, param->power),
0, 1.0);
for (x = 0; x < 256; x++)
cairo_move_to (cr, 0, 255-y);
for (x = 0; x < GRAPHSIZE; x++)
{
last_y = y;
/* curve */
y = 255 * CLAMP (logistic_function (param, x/(gdouble)255, param->power),
0, 1.0);
gdk_draw_line (gtk_widget_get_window (widget), style->black_gc,
x, 255-last_y, x, 255-y);
cairo_line_to (cr, x, 255-y);
}
gdk_cairo_set_source_color (cr, &style->black);
cairo_stroke (cr);
cairo_destroy (cr);
return TRUE;
}
@ -1831,7 +1860,7 @@ function_graph_new (GtkWidget *widget,
gtk_widget_show (frame);
preview = gtk_drawing_area_new ();
gtk_widget_set_size_request (preview, 256, 256);
gtk_widget_set_size_request (preview, GRAPHSIZE, GRAPHSIZE);
gtk_container_add (GTK_CONTAINER (frame), preview);
gtk_widget_show (preview);
g_signal_connect (preview, "expose-event",