static gboolean lowlight_motion_notify(GtkWidget *widget, GdkEventMotion *event, gpointer user_data)
{
dt_iop_module_t *self = (dt_iop_module_t *)user_data;
dt_iop_lowlight_gui_data_t *c = (dt_iop_lowlight_gui_data_t *)self->gui_data;
dt_iop_lowlight_params_t *p = (dt_iop_lowlight_params_t *)self->params;
const int inset = DT_IOP_LOWLIGHT_INSET;
GtkAllocation allocation;
gtk_widget_get_allocation(widget, &allocation);
int height = allocation.height - 2 * inset, width = allocation.width - 2 * inset;
if(!c->dragging) c->mouse_x = CLAMP(event->x - inset, 0, width) / (float)width;
c->mouse_y = 1.0 - CLAMP(event->y - inset, 0, height) / (float)height;
if(c->dragging)
{
*p = c->drag_params;
if(c->x_move >= 0)
{
const float mx = CLAMP(event->x - inset, 0, width) / (float)width;
if(c->x_move > 0 && c->x_move < DT_IOP_LOWLIGHT_BANDS - 1)
{
const float minx = p->transition_x[c->x_move - 1] + 0.001f;
const float maxx = p->transition_x[c->x_move + 1] - 0.001f;
p->transition_x[c->x_move] = fminf(maxx, fmaxf(minx, mx));
}
}
else
{
dt_iop_lowlight_get_params(p, c->mouse_x, c->mouse_y + c->mouse_pick, c->mouse_radius);
}
dt_dev_add_history_item(darktable.develop, self, TRUE);
}
else if(event->y > height)
{
c->x_move = 0;
float dist = fabs(p->transition_x[0] - c->mouse_x);
for(int k = 1; k < DT_IOP_LOWLIGHT_BANDS; k++)
{
float d2 = fabs(p->transition_x[k] - c->mouse_x);
if(d2 < dist)
{
c->x_move = k;
dist = d2;
}
}
}
else
{
c->x_move = -1;
}
gtk_widget_queue_draw(widget);
gint x, y;
gdk_window_get_device_position(event->window,
gdk_device_manager_get_client_pointer(
gdk_display_get_device_manager(gdk_window_get_display(event->window))),
&x, &y, NULL);
return TRUE;
}
static gboolean lowlight_draw(GtkWidget *widget, cairo_t *crf, gpointer user_data)
{
dt_iop_module_t *self = (dt_iop_module_t *)user_data;
dt_iop_lowlight_gui_data_t *c = (dt_iop_lowlight_gui_data_t *)self->gui_data;
dt_iop_lowlight_params_t p = *(dt_iop_lowlight_params_t *)self->params;
dt_draw_curve_set_point(c->transition_curve, 0, p.transition_x[DT_IOP_LOWLIGHT_BANDS - 2] - 1.0,
p.transition_y[0]);
for(int k = 0; k < DT_IOP_LOWLIGHT_BANDS; k++)
dt_draw_curve_set_point(c->transition_curve, k + 1, p.transition_x[k], p.transition_y[k]);
dt_draw_curve_set_point(c->transition_curve, DT_IOP_LOWLIGHT_BANDS + 1, p.transition_x[1] + 1.0,
p.transition_y[DT_IOP_LOWLIGHT_BANDS - 1]);
const int inset = DT_IOP_LOWLIGHT_INSET;
GtkAllocation allocation;
gtk_widget_get_allocation(widget, &allocation);
int width = allocation.width, height = allocation.height;
cairo_surface_t *cst = dt_cairo_image_surface_create(CAIRO_FORMAT_ARGB32, width, height);
cairo_t *cr = cairo_create(cst);
cairo_set_source_rgb(cr, .2, .2, .2);
cairo_paint(cr);
cairo_translate(cr, inset, inset);
width -= 2 * inset;
height -= 2 * inset;
cairo_set_line_width(cr, DT_PIXEL_APPLY_DPI(1.0));
cairo_set_source_rgb(cr, .1, .1, .1);
cairo_rectangle(cr, 0, 0, width, height);
cairo_stroke(cr);
cairo_set_source_rgb(cr, .3, .3, .3);
cairo_rectangle(cr, 0, 0, width, height);
cairo_fill(cr);
// draw grid
cairo_set_line_width(cr, DT_PIXEL_APPLY_DPI(.4));
cairo_set_source_rgb(cr, .1, .1, .1);
dt_draw_grid(cr, 8, 0, 0, width, height);
if(c->mouse_y > 0 || c->dragging)
{
// draw min/max curves:
dt_iop_lowlight_get_params(&p, c->mouse_x, 1., c->mouse_radius);
dt_draw_curve_set_point(c->transition_curve, 0, p.transition_x[DT_IOP_LOWLIGHT_BANDS - 2] - 1.0,
p.transition_y[0]);
for(int k = 0; k < DT_IOP_LOWLIGHT_BANDS; k++)
dt_draw_curve_set_point(c->transition_curve, k + 1, p.transition_x[k], p.transition_y[k]);
dt_draw_curve_set_point(c->transition_curve, DT_IOP_LOWLIGHT_BANDS + 1, p.transition_x[1] + 1.0,
p.transition_y[DT_IOP_LOWLIGHT_BANDS - 1]);
dt_draw_curve_calc_values(c->transition_curve, 0.0, 1.0, DT_IOP_LOWLIGHT_RES, c->draw_min_xs,
c->draw_min_ys);
p = *(dt_iop_lowlight_params_t *)self->params;
dt_iop_lowlight_get_params(&p, c->mouse_x, .0, c->mouse_radius);
dt_draw_curve_set_point(c->transition_curve, 0, p.transition_x[DT_IOP_LOWLIGHT_BANDS - 2] - 1.0,
p.transition_y[0]);
for(int k = 0; k < DT_IOP_LOWLIGHT_BANDS; k++)
dt_draw_curve_set_point(c->transition_curve, k + 1, p.transition_x[k], p.transition_y[k]);
dt_draw_curve_set_point(c->transition_curve, DT_IOP_LOWLIGHT_BANDS + 1, p.transition_x[1] + 1.0,
p.transition_y[DT_IOP_LOWLIGHT_BANDS - 1]);
dt_draw_curve_calc_values(c->transition_curve, 0.0, 1.0, DT_IOP_LOWLIGHT_RES, c->draw_max_xs,
c->draw_max_ys);
}
cairo_save(cr);
// draw x positions
cairo_set_source_rgb(cr, 0.6, 0.6, 0.6);
cairo_set_line_width(cr, DT_PIXEL_APPLY_DPI(1.));
const float arrw = DT_PIXEL_APPLY_DPI(7.0f);
for(int k = 0; k < DT_IOP_LOWLIGHT_BANDS; k++)
{
cairo_move_to(cr, width * p.transition_x[k], height + inset - DT_PIXEL_APPLY_DPI(1));
cairo_rel_line_to(cr, -arrw * .5f, 0);
cairo_rel_line_to(cr, arrw * .5f, -arrw);
cairo_rel_line_to(cr, arrw * .5f, arrw);
cairo_close_path(cr);
if(c->x_move == k)
cairo_fill(cr);
else
cairo_stroke(cr);
}
// draw selected cursor
cairo_translate(cr, 0, height);
// cairo_set_operator(cr, CAIRO_OPERATOR_ADD);
// cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
cairo_set_line_width(cr, DT_PIXEL_APPLY_DPI(2.));
cairo_set_source_rgba(cr, .7, .7, .7, 1.0);
p = *(dt_iop_lowlight_params_t *)self->params;
dt_draw_curve_set_point(c->transition_curve, 0, p.transition_x[DT_IOP_LOWLIGHT_BANDS - 2] - 1.0,
p.transition_y[0]);
for(int k = 0; k < DT_IOP_LOWLIGHT_BANDS; k++)
dt_draw_curve_set_point(c->transition_curve, k + 1, p.transition_x[k], p.transition_y[k]);
dt_draw_curve_set_point(c->transition_curve, DT_IOP_LOWLIGHT_BANDS + 1, p.transition_x[1] + 1.0,
p.transition_y[DT_IOP_LOWLIGHT_BANDS - 1]);
dt_draw_curve_calc_values(c->transition_curve, 0.0, 1.0, DT_IOP_LOWLIGHT_RES, c->draw_xs, c->draw_ys);
cairo_move_to(cr, 0 * width / (float)(DT_IOP_LOWLIGHT_RES - 1), -height * c->draw_ys[0]);
for(int k = 1; k < DT_IOP_LOWLIGHT_RES; k++)
cairo_line_to(cr, k * width / (float)(DT_IOP_LOWLIGHT_RES - 1), -height * c->draw_ys[k]);
cairo_stroke(cr);
// draw dots on knots
cairo_set_source_rgb(cr, 0.7, 0.7, 0.7);
cairo_set_line_width(cr, DT_PIXEL_APPLY_DPI(1.));
for(int k = 0; k < DT_IOP_LOWLIGHT_BANDS; k++)
{
cairo_arc(cr, width * p.transition_x[k], -height * p.transition_y[k], DT_PIXEL_APPLY_DPI(3.0), 0.0,
2.0 * M_PI);
if(c->x_move == k)
cairo_fill(cr);
else
cairo_stroke(cr);
}
if(c->mouse_y > 0 || c->dragging)
{
// draw min/max, if selected
cairo_set_source_rgba(cr, .7, .7, .7, .6);
cairo_move_to(cr, 0, -height * c->draw_min_ys[0]);
for(int k = 1; k < DT_IOP_LOWLIGHT_RES; k++)
cairo_line_to(cr, k * width / (float)(DT_IOP_LOWLIGHT_RES - 1), -height * c->draw_min_ys[k]);
for(int k = DT_IOP_LOWLIGHT_RES - 1; k >= 0; k--)
cairo_line_to(cr, k * width / (float)(DT_IOP_LOWLIGHT_RES - 1), -height * c->draw_max_ys[k]);
cairo_close_path(cr);
cairo_fill(cr);
// draw mouse focus circle
cairo_set_source_rgba(cr, .9, .9, .9, .5);
const float pos = DT_IOP_LOWLIGHT_RES * c->mouse_x;
int k = (int)pos;
const float f = k - pos;
if(k >= DT_IOP_LOWLIGHT_RES - 1) k = DT_IOP_LOWLIGHT_RES - 2;
float ht = -height * (f * c->draw_ys[k] + (1 - f) * c->draw_ys[k + 1]);
cairo_arc(cr, c->mouse_x * width, ht, c->mouse_radius * width, 0, 2. * M_PI);
cairo_stroke(cr);
}
cairo_restore(cr);
cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
// draw labels:
PangoLayout *layout;
PangoRectangle ink;
PangoFontDescription *desc = pango_font_description_copy_static(darktable.bauhaus->pango_font_desc);
pango_font_description_set_weight(desc, PANGO_WEIGHT_BOLD);
pango_font_description_set_absolute_size(desc,(.06 * height) * PANGO_SCALE);
layout = pango_cairo_create_layout(cr);
pango_layout_set_font_description(layout, desc);
cairo_set_source_rgb(cr, .1, .1, .1);
pango_layout_set_text(layout, _("dark"), -1);
pango_layout_get_pixel_extents(layout, &ink, NULL);
cairo_move_to(cr, .02 * width - ink.y, .5 * (height + ink.width));
cairo_save(cr);
cairo_rotate(cr, -M_PI * .5f);
pango_cairo_show_layout(cr, layout);
cairo_restore(cr);
pango_layout_set_text(layout, _("bright"), -1);
pango_layout_get_pixel_extents(layout, &ink, NULL);
cairo_move_to(cr, .98 * width - ink.height, .5 * (height + ink.width));
cairo_save(cr);
cairo_rotate(cr, -M_PI * .5f);
pango_cairo_show_layout(cr, layout);
cairo_restore(cr);
pango_layout_set_text(layout, _("day vision"), -1);
pango_layout_get_pixel_extents(layout, &ink, NULL);
cairo_move_to(cr, .5 * (width - ink.width), .08 * height - ink.height);
pango_cairo_show_layout(cr, layout);
pango_layout_set_text(layout, _("night vision"), -1);
pango_layout_get_pixel_extents(layout, &ink, NULL);
cairo_move_to(cr, .5 * (width - ink.width), .97 * height - ink.height);
pango_cairo_show_layout(cr, layout);
pango_font_description_free(desc);
g_object_unref(layout);
cairo_destroy(cr);
cairo_set_source_surface(crf, cst, 0, 0);
cairo_paint(crf);
cairo_surface_destroy(cst);
return TRUE;
}
static gboolean
lowlight_expose(GtkWidget *widget, GdkEventExpose *event, gpointer user_data)
{
dt_iop_module_t *self = (dt_iop_module_t *)user_data;
dt_iop_lowlight_gui_data_t *c = (dt_iop_lowlight_gui_data_t *)self->gui_data;
dt_iop_lowlight_params_t p = *(dt_iop_lowlight_params_t *)self->params;
dt_draw_curve_set_point(c->transition_curve, 0, p.transition_x[DT_IOP_LOWLIGHT_BANDS-2]-1.0, p.transition_y[0]);
for(int k=0; k<DT_IOP_LOWLIGHT_BANDS; k++) dt_draw_curve_set_point(c->transition_curve, k+1, p.transition_x[k], p.transition_y[k]);
dt_draw_curve_set_point(c->transition_curve, DT_IOP_LOWLIGHT_BANDS+1, p.transition_x[1]+1.0, p.transition_y[DT_IOP_LOWLIGHT_BANDS-1]);
const int inset = DT_IOP_LOWLIGHT_INSET;
int width = widget->allocation.width, height = widget->allocation.height;
cairo_surface_t *cst = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, width, height);
cairo_t *cr = cairo_create(cst);
cairo_set_source_rgb (cr, .2, .2, .2);
cairo_paint(cr);
cairo_translate(cr, inset, inset);
width -= 2*inset;
height -= 2*inset;
cairo_set_line_width(cr, 1.0);
cairo_set_source_rgb (cr, .1, .1, .1);
cairo_rectangle(cr, 0, 0, width, height);
cairo_stroke(cr);
cairo_set_source_rgb (cr, .3, .3, .3);
cairo_rectangle(cr, 0, 0, width, height);
cairo_fill(cr);
// draw grid
cairo_set_line_width(cr, .4);
cairo_set_source_rgb (cr, .1, .1, .1);
dt_draw_grid(cr, 8, 0, 0, width, height);
if(c->mouse_y > 0 || c->dragging)
{
// draw min/max curves:
dt_iop_lowlight_get_params(&p, c->mouse_x, 1., c->mouse_radius);
dt_draw_curve_set_point(c->transition_curve, 0, p.transition_x[DT_IOP_LOWLIGHT_BANDS-2]-1.0, p.transition_y[0]);
for(int k=0; k<DT_IOP_LOWLIGHT_BANDS; k++)
dt_draw_curve_set_point(c->transition_curve, k+1, p.transition_x[k], p.transition_y[k]);
dt_draw_curve_set_point(c->transition_curve, DT_IOP_LOWLIGHT_BANDS+1, p.transition_x[1]+1.0, p.transition_y[DT_IOP_LOWLIGHT_BANDS-1]);
dt_draw_curve_calc_values(c->transition_curve, 0.0, 1.0, DT_IOP_LOWLIGHT_RES, c->draw_min_xs, c->draw_min_ys);
p = *(dt_iop_lowlight_params_t *)self->params;
dt_iop_lowlight_get_params(&p, c->mouse_x, .0, c->mouse_radius);
dt_draw_curve_set_point(c->transition_curve, 0, p.transition_x[DT_IOP_LOWLIGHT_BANDS-2]-1.0, p.transition_y[0]);
for(int k=0; k<DT_IOP_LOWLIGHT_BANDS; k++)
dt_draw_curve_set_point(c->transition_curve, k+1, p.transition_x[k], p.transition_y[k]);
dt_draw_curve_set_point(c->transition_curve, DT_IOP_LOWLIGHT_BANDS+1, p.transition_x[1]+1.0, p.transition_y[DT_IOP_LOWLIGHT_BANDS-1]);
dt_draw_curve_calc_values(c->transition_curve, 0.0, 1.0, DT_IOP_LOWLIGHT_RES, c->draw_max_xs, c->draw_max_ys);
}
cairo_save(cr);
// draw x positions
cairo_set_source_rgb(cr, 0.6, 0.6, 0.6);
cairo_set_line_width(cr, 1.);
const float arrw = 7.0f;
for(int k=0; k<DT_IOP_LOWLIGHT_BANDS; k++)
{
cairo_move_to(cr, width*p.transition_x[k], height+inset-1);
cairo_rel_line_to(cr, -arrw*.5f, 0);
cairo_rel_line_to(cr, arrw*.5f, -arrw);
cairo_rel_line_to(cr, arrw*.5f, arrw);
cairo_close_path(cr);
if(c->x_move == k) cairo_fill(cr);
else cairo_stroke(cr);
}
// draw selected cursor
cairo_translate(cr, 0, height);
// cairo_set_operator(cr, CAIRO_OPERATOR_ADD);
//cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
cairo_set_line_width(cr, 2.);
cairo_set_source_rgba(cr, .7, .7, .7, 1.0);
p = *(dt_iop_lowlight_params_t *)self->params;
dt_draw_curve_set_point(c->transition_curve, 0, p.transition_x[DT_IOP_LOWLIGHT_BANDS-2]-1.0, p.transition_y[0]);
for(int k=0; k<DT_IOP_LOWLIGHT_BANDS; k++)
dt_draw_curve_set_point(c->transition_curve, k+1, p.transition_x[k], p.transition_y[k]);
dt_draw_curve_set_point(c->transition_curve, DT_IOP_LOWLIGHT_BANDS+1, p.transition_x[1]+1.0, p.transition_y[DT_IOP_LOWLIGHT_BANDS-1]);
dt_draw_curve_calc_values(c->transition_curve, 0.0, 1.0, DT_IOP_LOWLIGHT_RES, c->draw_xs, c->draw_ys);
cairo_move_to(cr, 0*width/(float)(DT_IOP_LOWLIGHT_RES-1), - height*c->draw_ys[0]);
for(int k=1; k<DT_IOP_LOWLIGHT_RES; k++) cairo_line_to(cr, k*width/(float)(DT_IOP_LOWLIGHT_RES-1), - height*c->draw_ys[k]);
cairo_stroke(cr);
// draw dots on knots
cairo_set_source_rgb(cr, 0.7, 0.7, 0.7);
cairo_set_line_width(cr, 1.);
for(int k=0; k<DT_IOP_LOWLIGHT_BANDS; k++)
{
cairo_arc(cr, width*p.transition_x[k], - height*p.transition_y[k], 3.0, 0.0, 2.0*M_PI);
if(c->x_move == k) cairo_fill(cr);
else cairo_stroke(cr);
}
if(c->mouse_y > 0 || c->dragging)
{
// draw min/max, if selected
cairo_set_source_rgba(cr, .7, .7, .7, .6);
cairo_move_to(cr, 0, - height*c->draw_min_ys[0]);
for(int k=1; k<DT_IOP_LOWLIGHT_RES; k++) cairo_line_to(cr, k*width/(float)(DT_IOP_LOWLIGHT_RES-1), - height*c->draw_min_ys[k]);
for(int k=DT_IOP_LOWLIGHT_RES-1; k>=0; k--) cairo_line_to(cr, k*width/(float)(DT_IOP_LOWLIGHT_RES-1), - height*c->draw_max_ys[k]);
cairo_close_path(cr);
cairo_fill(cr);
// draw mouse focus circle
cairo_set_source_rgba(cr, .9, .9, .9, .5);
const float pos = DT_IOP_LOWLIGHT_RES * c->mouse_x;
int k = (int)pos;
const float f = k - pos;
if(k >= DT_IOP_LOWLIGHT_RES-1) k = DT_IOP_LOWLIGHT_RES - 2;
float ht = -height*(f*c->draw_ys[k] + (1-f)*c->draw_ys[k+1]);
cairo_arc(cr, c->mouse_x*width, ht, c->mouse_radius*width, 0, 2.*M_PI);
cairo_stroke(cr);
}
cairo_restore (cr);
cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
// draw labels:
cairo_text_extents_t ext;
cairo_set_source_rgb(cr, .1, .1, .1);
cairo_select_font_face (cr, "sans-serif", CAIRO_FONT_SLANT_NORMAL, CAIRO_FONT_WEIGHT_BOLD);
cairo_set_font_size (cr, .06*height);
cairo_text_extents (cr, _("dark"), &ext);
cairo_move_to (cr, .02*width+ext.height, .5*(height+ext.width));
cairo_save (cr);
cairo_rotate (cr, -M_PI*.5f);
cairo_show_text(cr, _("dark"));
cairo_restore (cr);
cairo_text_extents (cr, _("bright"), &ext);
cairo_move_to (cr, .98*width, .5*(height+ext.width));
cairo_save (cr);
cairo_rotate (cr, -M_PI*.5f);
cairo_show_text(cr, _("bright"));
cairo_restore (cr);
cairo_text_extents (cr, _("day vision"), &ext);
cairo_move_to (cr, .5*(width-ext.width), .08*height);
cairo_show_text(cr, _("day vision"));
cairo_text_extents (cr, _("night vision"), &ext);
cairo_move_to (cr, .5*(width-ext.width), .97*height);
cairo_show_text(cr, _("night vision"));
cairo_destroy(cr);
cairo_t *cr_pixmap = gdk_cairo_create(gtk_widget_get_window(widget));
cairo_set_source_surface (cr_pixmap, cst, 0, 0);
cairo_paint(cr_pixmap);
cairo_destroy(cr_pixmap);
cairo_surface_destroy(cst);
return TRUE;
}
