McSinyx
/
megapixels
mirror of https://git.sr.ht/~martijnbraam/megapixels
1
1
Fork 0
Code Issues Releases Wiki Activity

Draw controls over the preview

This commit is contained in:
Martijn Braam 2020-10-03 14:40:41 +02:00
parent 2eb486bf1d
commit d891f44937
1 changed files with 89 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

89
main.c
View File

@ -84,11 +84,14 @@ static int ready = 0;
static int capture = 0;
static int current_is_rear = 1;
static cairo_surface_t *surface = NULL;
static cairo_surface_t *status_surface = NULL;
static int preview_width = -1;
static int preview_height = -1;
static char *last_path = NULL;
static int auto_exposure = 1;
static int exposure = 1;
static int auto_gain = 1;
static int gain = 1;
static int burst_length = 5;
static char burst_dir[23];
static char processing_script[512];
@ -475,6 +478,7 @@ process_image(const int *p, int size)
pixbufrot = gdk_pixbuf_rotate_simple(pixbuf, GDK_PIXBUF_ROTATE_CLOCKWISE);
}
// Draw preview image
scale = (double) preview_width / gdk_pixbuf_get_width(pixbufrot);
cr = cairo_create(surface);
cairo_set_source_rgb(cr, 0, 0, 0);
@ -483,6 +487,13 @@ process_image(const int *p, int size)
gdk_cairo_set_source_pixbuf(cr, pixbufrot, 0, 0);
cairo_pattern_set_extend(cairo_get_source(cr), CAIRO_EXTEND_NONE);
cairo_paint(cr);
// Draw controls over preview
cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
cairo_set_source_surface(cr, status_surface, 0, 0);
cairo_paint(cr);
// Queue gtk3 repaint of the preview area
gtk_widget_queue_draw_area(preview, 0, 0, preview_width, preview_height);
cairo_destroy(cr);
g_object_unref(pixbufrot);
@ -636,6 +647,81 @@ preview_draw(GtkWidget *widget, cairo_t *cr, gpointer data)
return FALSE;
}
static void
draw_controls()
{
cairo_t *cr;
char iso[6];
char shutterangle[6];
if (auto_exposure) {
sprintf(shutterangle, "auto");
} else {
sprintf(shutterangle, "%d", exposure);
}
if (auto_gain) {
sprintf(iso, "auto");
} else {
sprintf(iso, "%d", gain);
}
if (status_surface)
cairo_surface_destroy(status_surface);
// Make a service to show status of controls, 32px high
status_surface = gdk_window_create_similar_surface(gtk_widget_get_window(preview),
CAIRO_CONTENT_COLOR_ALPHA,
preview_width, 32);
cr = cairo_create(status_surface);
cairo_set_source_rgba(cr, 0, 0, 0, 0.0);
cairo_paint(cr);
// Draw the outlines for the headings
cairo_select_font_face(cr, "sans-serif", CAIRO_FONT_SLANT_NORMAL, CAIRO_FONT_WEIGHT_BOLD);
cairo_set_font_size(cr, 9);
cairo_set_source_rgba(cr, 0, 0, 0, 1);
cairo_move_to(cr, 16, 16);
cairo_text_path(cr, "ISO");
cairo_stroke(cr);
cairo_move_to(cr, 60, 16);
cairo_text_path(cr, "Shutter");
cairo_stroke(cr);
// Draw the fill for the headings
cairo_set_source_rgba(cr, 1, 1, 1, 1);
cairo_move_to(cr, 16, 16);
cairo_show_text(cr, "ISO");
cairo_move_to(cr, 60, 16);
cairo_show_text(cr, "Shutter");
// Draw the outlines for the values
cairo_select_font_face(cr, "sans-serif", CAIRO_FONT_SLANT_NORMAL, CAIRO_FONT_WEIGHT_NORMAL);
cairo_set_font_size(cr, 11);
cairo_set_source_rgba(cr, 0, 0, 0, 1);
cairo_move_to(cr, 16, 26);
cairo_text_path(cr, iso);
cairo_stroke(cr);
cairo_move_to(cr, 60, 26);
cairo_text_path(cr, shutterangle);
cairo_stroke(cr);
// Draw the fill for the values
cairo_set_source_rgba(cr, 1, 1, 1, 1);
cairo_move_to(cr, 16, 26);
cairo_show_text(cr, iso);
cairo_move_to(cr, 60, 26);
cairo_show_text(cr, shutterangle);
cairo_destroy(cr);
}
static gboolean
preview_configure(GtkWidget *widget, GdkEventConfigure *event)
{
@ -656,6 +742,9 @@ preview_configure(GtkWidget *widget, GdkEventConfigure *event)
cairo_set_source_rgb(cr, 0, 0, 0);
cairo_paint(cr);
cairo_destroy(cr);
draw_controls();
return TRUE;
}