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Create cairo context in expose callback

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This commit is contained in:
Paul Dicker
2025-04-03 21:27:17 +02:00
committed by Stéphane Lesimple
parent 6dc80bb542
commit 5da5fa54dc
12 changed files with 85 additions and 86 deletions
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14
src/rs01-window.c
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@@ -32,7 +32,7 @@
*** Forward declarations
***/
static void redraw_curve(RS01Widgets*);
static void redraw_curve(cairo_t *cr, RS01Widgets*);
static void update_geometry(RS01Widgets*);
/* Protected widget access */
@@ -257,19 +257,18 @@ static void update_geometry(RS01Widgets *wl)
TRUE, TRUE, wl->fixCurve->leftX, GTK_PACK_START);
}
static void redraw_curve(RS01Widgets *wl)
static void redraw_curve(cairo_t *cr, RS01Widgets *wl)
{ int y;
/* Redraw the curve */
GuiRedrawAxes(wl->fixCurve);
GuiRedrawCurve(wl->fixCurve, wl->percent);
GuiRedrawAxes(cr, wl->fixCurve);
GuiRedrawCurve(cr, wl->fixCurve, wl->percent);
/* Ecc capacity threshold line */
y = GuiCurveY(wl->fixCurve, wl->eccBytes);
cairo_t *cr = gdk_cairo_create(gtk_widget_get_window(wl->fixCurve->widget));
gdk_cairo_set_source_color(cr, Closure->greenSector);
cairo_set_line_width(cr, 1.0);
cairo_move_to(cr, wl->fixCurve->leftX-5.5, y+0.5);
@@ -282,14 +281,15 @@ static void redraw_curve(RS01Widgets *wl)
*/
static gboolean expose_cb(GtkWidget *widget, GdkEventExpose *event, gpointer data)
{ RS01Widgets *wl = (RS01Widgets*)data;
{ cairo_t *cr = gdk_cairo_create(GDK_DRAWABLE(gtk_widget_get_window(widget)));
RS01Widgets *wl = (RS01Widgets*)data;
if(event->count) /* Exposure compression */
{ return TRUE;
}
update_geometry(wl);
redraw_curve(wl);
redraw_curve(cr, wl);
return TRUE;
}