void
gui_post_expose(dt_lib_module_t *self, cairo_t *cr, int32_t width, int32_t height, int32_t pointerx, int32_t pointery)
{
dt_camera_t *cam = (dt_camera_t*)darktable.camctl->active_camera;
dt_lib_live_view_t *lib = self->data;
if(cam->is_live_viewing == FALSE || cam->live_view_zoom == TRUE)
return;
dt_pthread_mutex_lock(&cam->live_view_pixbuf_mutex);
if(GDK_IS_PIXBUF(cam->live_view_pixbuf))
{
gint pw = gdk_pixbuf_get_width(cam->live_view_pixbuf);
gint ph = gdk_pixbuf_get_height(cam->live_view_pixbuf);
float w = width-(MARGIN*2.0f);
float h = height-(MARGIN*2.0f);
float scale = 1.0;
// if(cam->live_view_zoom == FALSE)
// {
if(pw > w) scale = w/pw;
if(ph > h) scale = MIN(scale, h/ph);
// }
float sw = scale*pw;
float sh = scale*ph;
// draw guides
float left = (width - scale*pw)*0.5;
float right = left + scale*pw;
float top = (height - scale*ph)*0.5;
float bottom = top + scale*ph;
double dashes = 5.0;
cairo_save(cr);
cairo_set_dash(cr, &dashes, 1, 0);
int which = gtk_combo_box_get_active(GTK_COMBO_BOX(lib->guide_selector));
switch(which)
{
case GUIDE_GRID:
dt_guides_draw_simple_grid(cr, left, top, right, bottom, 1.0);
break;
case GUIDE_DIAGONAL:
dt_guides_draw_diagonal_method(cr, left, top, sw, sh);
cairo_stroke (cr);
cairo_set_dash (cr, &dashes, 0, 0);
cairo_set_source_rgba(cr, .3, .3, .3, .8);
dt_guides_draw_diagonal_method(cr, left, top, sw, sh);
cairo_stroke (cr);
break;
case GUIDE_THIRD:
dt_guides_draw_rules_of_thirds(cr, left, top, right, bottom, sw/3.0, sh/3.0);
cairo_stroke (cr);
cairo_set_dash (cr, &dashes, 0, 0);
cairo_set_source_rgba(cr, .3, .3, .3, .8);
dt_guides_draw_rules_of_thirds(cr, left, top, right, bottom, sw/3.0, sh/3.0);
cairo_stroke (cr);
break;
case GUIDE_TRIANGL:
{
int dst = (int)((sh*cos(atan(sw/sh)) / (cos(atan(sh/sw)))));
// Move coordinates to local center selection.
cairo_translate(cr, ((right - left)/2+left), ((bottom - top)/2+top));
// Flip horizontal.
if (gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(lib->flipHorGoldenGuide)))
cairo_scale(cr, -1, 1);
// Flip vertical.
if (gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(lib->flipVerGoldenGuide)))
cairo_scale(cr, 1, -1);
dt_guides_draw_harmonious_triangles(cr, left, top, right, bottom, dst);
cairo_stroke (cr);
//p.setPen(QPen(d->guideColor, d->guideSize, Qt::DotLine));
cairo_set_dash (cr, &dashes, 0, 0);
cairo_set_source_rgba(cr, .3, .3, .3, .8);
dt_guides_draw_harmonious_triangles(cr, left, top, right, bottom, dst);
cairo_stroke (cr);
}
break;
case GUIDE_GOLDEN:
{
// Move coordinates to local center selection.
cairo_translate(cr, ((right - left)/2+left), ((bottom - top)/2+top));
// Flip horizontal.
if (gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(lib->flipHorGoldenGuide)))
cairo_scale(cr, -1, 1);
// Flip vertical.
if (gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(lib->flipVerGoldenGuide)))
cairo_scale(cr, 1, -1);
float w = sw;
float h = sh;
// lengths for the golden mean and half the sizes of the region:
float w_g = w*INVPHI;
float h_g = h*INVPHI;
float w_2 = w/2;
float h_2 = h/2;
dt_QRect_t R1, R2, R3, R4, R5, R6, R7;
dt_guides_q_rect (&R1, -w_2, -h_2, w_g, h);
// w - 2*w_2 corrects for one-pixel difference
// so that R2.right() is really at the right end of the region
dt_guides_q_rect (&R2, w_g-w_2, h_2-h_g, w-w_g+1-(w - 2*w_2), h_g);
dt_guides_q_rect (&R3, w_2 - R2.width*INVPHI, -h_2, R2.width*INVPHI, h - R2.height);
dt_guides_q_rect (&R4, R2.left, R1.top, R3.left - R2.left, R3.height*INVPHI);
dt_guides_q_rect (&R5, R4.left, R4.bottom, R4.width*INVPHI, R3.height - R4.height);
dt_guides_q_rect (&R6, R5.left + R5.width, R5.bottom - R5.height*INVPHI, R3.left - R5.right, R5.height*INVPHI);
dt_guides_q_rect (&R7, R6.right - R6.width*INVPHI, R4.bottom, R6.width*INVPHI, R5.height - R6.height);
dt_guides_draw_golden_mean(cr, &R1, &R2, &R3, &R4, &R5, &R6, &R7,
gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(lib->goldenSectionBox)),
gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(lib->goldenTriangleBox)),
gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(lib->goldenSpiralSectionBox)),
gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(lib->goldenSpiralBox))
);
cairo_stroke (cr);
cairo_set_dash (cr, &dashes, 0, 0);
cairo_set_source_rgba(cr, .3, .3, .3, .8);
dt_guides_draw_golden_mean(cr, &R1, &R2, &R3, &R4, &R5, &R6, &R7,
gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(lib->goldenSectionBox)),
gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(lib->goldenTriangleBox)),
gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(lib->goldenSpiralSectionBox)),
gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(lib->goldenSpiralBox))
);
cairo_stroke (cr);
}
break;
}
cairo_restore(cr);
}
dt_pthread_mutex_unlock(&cam->live_view_pixbuf_mutex);
}
static void _guides_draw_rules_of_thirds(cairo_t *cr, const float x, const float y,
const float w, const float h,
const float zoom_scale, void *user_data)
{
dt_guides_draw_rules_of_thirds(cr, x, y, w, h);
}
