void commit_params (struct dt_iop_module_t *self, dt_iop_params_t *p1, dt_dev_pixelpipe_t *pipe, dt_dev_pixelpipe_iop_t *piece)
{
// pull in new params to gegl
dt_iop_colorzones_data_t *d = (dt_iop_colorzones_data_t *)(piece->data);
dt_iop_colorzones_params_t *p = (dt_iop_colorzones_params_t *)p1;
#ifdef HAVE_GEGL
// TODO
#else
#if 0 // print new preset
printf("p.channel = %d;\n", p->channel);
for(int k=0; k<3; k++) for(int i=0; i<DT_IOP_COLORZONES_BANDS; i++)
{
printf("p.equalizer_x[%d][%i] = %f;\n", k, i, p->equalizer_x[k][i]);
printf("p.equalizer_y[%d][%i] = %f;\n", k, i, p->equalizer_y[k][i]);
}
#endif
d->channel = (dt_iop_colorzones_channel_t)p->channel;
for(int ch=0; ch<3; ch++)
{
if(d->channel == DT_IOP_COLORZONES_h)
dt_draw_curve_set_point(d->curve[ch], 0, p->equalizer_x[ch][DT_IOP_COLORZONES_BANDS-2]-1.0, p->equalizer_y[ch][DT_IOP_COLORZONES_BANDS-2]);
else
dt_draw_curve_set_point(d->curve[ch], 0, p->equalizer_x[ch][DT_IOP_COLORZONES_BANDS-2]-1.0, p->equalizer_y[ch][0]);
for(int k=0; k<DT_IOP_COLORZONES_BANDS; k++)
dt_draw_curve_set_point(d->curve[ch], k+1, p->equalizer_x[ch][k], p->equalizer_y[ch][k]);
if(d->channel == DT_IOP_COLORZONES_h)
dt_draw_curve_set_point(d->curve[ch], DT_IOP_COLORZONES_BANDS+1, p->equalizer_x[ch][1]+1.0, p->equalizer_y[ch][1]);
else
dt_draw_curve_set_point(d->curve[ch], DT_IOP_COLORZONES_BANDS+1, p->equalizer_x[ch][1]+1.0, p->equalizer_y[ch][DT_IOP_COLORZONES_BANDS-1]);
dt_draw_curve_calc_values(d->curve[ch], 0.0, 1.0, DT_IOP_COLORZONES_LUT_RES, d->lut[3], d->lut[ch]);
}
#endif
}
void commit_params (struct dt_iop_module_t *self, dt_iop_params_t *p1, dt_dev_pixelpipe_t *pipe, dt_dev_pixelpipe_iop_t *piece)
{
dt_iop_lowlight_data_t *d = (dt_iop_lowlight_data_t *)(piece->data);
dt_iop_lowlight_params_t *p = (dt_iop_lowlight_params_t *)p1;
dt_draw_curve_set_point(d->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(d->curve, k+1, p->transition_x[k], p->transition_y[k]);
dt_draw_curve_set_point(d->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(d->curve, 0.0, 1.0, DT_IOP_LOWLIGHT_LUT_RES, NULL, d->lut);
d->blueness = p->blueness;
}
void commit_params (struct dt_iop_module_t *self, dt_iop_params_t *p1, dt_dev_pixelpipe_t *pipe, dt_dev_pixelpipe_iop_t *piece)
{
// pull in new params to gegl
dt_iop_tonecurve_data_t *d = (dt_iop_tonecurve_data_t *)(piece->data);
dt_iop_tonecurve_params_t *p = (dt_iop_tonecurve_params_t *)p1;
for(int k=0; k<6; k++)
dt_draw_curve_set_point(d->curve, k, p->tonecurve_x[k], p->tonecurve_y[k]);
dt_draw_curve_calc_values(d->curve, 0.0f, 1.0f, 0x10000, NULL, d->table);
for(int k=0; k<0x10000; k++) d->table[k] *= 100.0f;
// now the extrapolation stuff:
const float x[4] = {0.7f, 0.8f, 0.9f, 1.0f};
const float y[4] = {d->table[CLAMP((int)(x[0]*0x10000ul), 0, 0xffff)],
d->table[CLAMP((int)(x[1]*0x10000ul), 0, 0xffff)],
d->table[CLAMP((int)(x[2]*0x10000ul), 0, 0xffff)],
d->table[CLAMP((int)(x[3]*0x10000ul), 0, 0xffff)]
};
dt_iop_estimate_exp(x, y, 4, d->unbounded_coeffs);
}
void commit_params (struct dt_iop_module_t *self, dt_iop_params_t *p1, dt_dev_pixelpipe_t *pipe, dt_dev_pixelpipe_iop_t *piece)
{
dt_iop_tonecurve_data_t *d = (dt_iop_tonecurve_data_t *)(piece->data);
dt_iop_tonecurve_params_t *p = (dt_iop_tonecurve_params_t *)p1;
for(int ch=0; ch<ch_max; ch++)
{
// take care of possible change of curve type or number of nodes (not yet implemented in UI)
if(d->curve_type[ch] != p->tonecurve_type[ch] || d->curve_nodes[ch] != p->tonecurve_nodes[ch])
{
dt_draw_curve_destroy(d->curve[ch]);
d->curve[ch] = dt_draw_curve_new(0.0, 1.0, p->tonecurve_type[ch]);
d->curve_nodes[ch] = p->tonecurve_nodes[ch];
d->curve_type[ch] = p->tonecurve_type[ch];
for(int k=0; k<p->tonecurve_nodes[ch]; k++)
(void)dt_draw_curve_add_point(d->curve[ch], p->tonecurve[ch][k].x, p->tonecurve[ch][k].y);
}
else
{
for(int k=0; k<p->tonecurve_nodes[ch]; k++)
dt_draw_curve_set_point(d->curve[ch], k, p->tonecurve[ch][k].x, p->tonecurve[ch][k].y);
}
dt_draw_curve_calc_values(d->curve[ch], 0.0f, 1.0f, 0x10000, NULL, d->table[ch]);
}
for(int k=0; k<0x10000; k++) d->table[ch_L][k] *= 100.0f;
for(int k=0; k<0x10000; k++) d->table[ch_a][k] = d->table[ch_a][k]*256.0f - 128.0f;
for(int k=0; k<0x10000; k++) d->table[ch_b][k] = d->table[ch_b][k]*256.0f - 128.0f;
d->autoscale_ab = p->tonecurve_autoscale_ab;
// now the extrapolation stuff (for L curve only):
const float xm = p->tonecurve[ch_L][p->tonecurve_nodes[ch_L]-1].x;
const float x[4] = {0.7f*xm, 0.8f*xm, 0.9f*xm, 1.0f*xm};
const float y[4] = {d->table[ch_L][CLAMP((int)(x[0]*0x10000ul), 0, 0xffff)],
d->table[ch_L][CLAMP((int)(x[1]*0x10000ul), 0, 0xffff)],
d->table[ch_L][CLAMP((int)(x[2]*0x10000ul), 0, 0xffff)],
d->table[ch_L][CLAMP((int)(x[3]*0x10000ul), 0, 0xffff)]
};
dt_iop_estimate_exp(x, y, 4, d->unbounded_coeffs);
}
void commit_params(struct dt_iop_module_t *self, dt_iop_params_t *p1, dt_dev_pixelpipe_t *pipe,
dt_dev_pixelpipe_iop_t *piece)
{
dt_iop_basecurve_data_t *d = (dt_iop_basecurve_data_t *)(piece->data);
dt_iop_basecurve_params_t *p = (dt_iop_basecurve_params_t *)p1;
const int ch = 0;
// take care of possible change of curve type or number of nodes (not yet implemented in UI)
if(d->basecurve_type != p->basecurve_type[ch] || d->basecurve_nodes != p->basecurve_nodes[ch])
{
if(d->curve) // catch initial init_pipe case
dt_draw_curve_destroy(d->curve);
d->curve = dt_draw_curve_new(0.0, 1.0, p->basecurve_type[ch]);
d->basecurve_nodes = p->basecurve_nodes[ch];
d->basecurve_type = p->basecurve_type[ch];
for(int k = 0; k < p->basecurve_nodes[ch]; k++)
{
// printf("p->basecurve[%i][%i].x = %f;\n", ch, k, p->basecurve[ch][k].x);
// printf("p->basecurve[%i][%i].y = %f;\n", ch, k, p->basecurve[ch][k].y);
(void)dt_draw_curve_add_point(d->curve, p->basecurve[ch][k].x, p->basecurve[ch][k].y);
}
}
else
{
for(int k = 0; k < p->basecurve_nodes[ch]; k++)
dt_draw_curve_set_point(d->curve, k, p->basecurve[ch][k].x, p->basecurve[ch][k].y);
}
dt_draw_curve_calc_values(d->curve, 0.0f, 1.0f, 0x10000, NULL, d->table);
// now the extrapolation stuff:
const float xm = p->basecurve[0][p->basecurve_nodes[0] - 1].x;
const float x[4] = { 0.7f * xm, 0.8f * xm, 0.9f * xm, 1.0f * xm };
const float y[4] = { d->table[CLAMP((int)(x[0] * 0x10000ul), 0, 0xffff)],
d->table[CLAMP((int)(x[1] * 0x10000ul), 0, 0xffff)],
d->table[CLAMP((int)(x[2] * 0x10000ul), 0, 0xffff)],
d->table[CLAMP((int)(x[3] * 0x10000ul), 0, 0xffff)] };
dt_iop_estimate_exp(x, y, 4, d->unbounded_coeffs);
}
static gboolean dt_iop_tonecurve_expose(GtkWidget *widget, GdkEventExpose *event, gpointer user_data)
{
dt_iop_module_t *self = (dt_iop_module_t *)user_data;
dt_iop_tonecurve_gui_data_t *c = (dt_iop_tonecurve_gui_data_t *)self->gui_data;
dt_iop_tonecurve_params_t *p = (dt_iop_tonecurve_params_t *)self->params;
dt_develop_t *dev = darktable.develop;
const float color_labels_left[3][3] = { { 0.3f, 0.3f, 0.3f },
{ 0.0f, 0.34f, 0.27f },
{ 0.0f, 0.27f, 0.58f }
};
const float color_labels_right[3][3] = {{ 0.3f, 0.3f, 0.3f },
{ 0.53f, 0.08f, 0.28f},
{ 0.81f, 0.66f, 0.0f }
};
int ch = c->channel;
int nodes = p->tonecurve_nodes[ch];
dt_iop_tonecurve_node_t *tonecurve = p->tonecurve[ch];
int autoscale_ab = p->tonecurve_autoscale_ab;
if(c->minmax_curve_type[ch] != p->tonecurve_type[ch] || c->minmax_curve_nodes[ch] != p->tonecurve_nodes[ch])
{
dt_draw_curve_destroy(c->minmax_curve[ch]);
c->minmax_curve[ch] = dt_draw_curve_new(0.0, 1.0, p->tonecurve_type[ch]);
c->minmax_curve_nodes[ch] = p->tonecurve_nodes[ch];
c->minmax_curve_type[ch] = p->tonecurve_type[ch];
for(int k=0; k<p->tonecurve_nodes[ch]; k++)
(void)dt_draw_curve_add_point(c->minmax_curve[ch], p->tonecurve[ch][k].x, p->tonecurve[ch][k].y);
}
else
{
for(int k=0; k<p->tonecurve_nodes[ch]; k++)
dt_draw_curve_set_point(c->minmax_curve[ch], k, p->tonecurve[ch][k].x, p->tonecurve[ch][k].y);
}
dt_draw_curve_t *minmax_curve = c->minmax_curve[ch];
dt_draw_curve_calc_values(minmax_curve, 0.0, 1.0, DT_IOP_TONECURVE_RES, c->draw_xs, c->draw_ys);
const float xm = tonecurve[nodes-1].x;
const float x[4] = {0.7f*xm, 0.8f*xm, 0.9f*xm, 1.0f*xm};
const float y[4] = {c->draw_ys[CLAMP((int)(x[0]*DT_IOP_TONECURVE_RES), 0, DT_IOP_TONECURVE_RES-1)],
c->draw_ys[CLAMP((int)(x[1]*DT_IOP_TONECURVE_RES), 0, DT_IOP_TONECURVE_RES-1)],
c->draw_ys[CLAMP((int)(x[2]*DT_IOP_TONECURVE_RES), 0, DT_IOP_TONECURVE_RES-1)],
c->draw_ys[CLAMP((int)(x[3]*DT_IOP_TONECURVE_RES), 0, DT_IOP_TONECURVE_RES-1)]
};
float unbounded_coeffs[3];
dt_iop_estimate_exp(x, y, 4, unbounded_coeffs);
const int inset = DT_GUI_CURVE_EDITOR_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);
// clear bg
cairo_set_source_rgb (cr, .2, .2, .2);
cairo_paint(cr);
cairo_translate(cr, inset, inset);
width -= 2*inset;
height -= 2*inset;
#if 0
// draw shadow around
float alpha = 1.0f;
for(int k=0; k<inset; k++)
{
cairo_rectangle(cr, -k, -k, width + 2*k, height + 2*k);
cairo_set_source_rgba(cr, 0, 0, 0, alpha);
alpha *= 0.6f;
cairo_fill(cr);
}
#else
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);
#endif
cairo_set_source_rgb (cr, .3, .3, .3);
cairo_rectangle(cr, 0, 0, width, height);
cairo_fill(cr);
// draw color labels
const int cells = 8;
for(int j=0; j<cells; j++)
{
for(int i=0; i<cells; i++)
{
const float f = (cells-1-j+i)/(2.0f*cells-2.0f);
cairo_set_source_rgba (cr,
(1.0f-f)*color_labels_left[ch][0] + f*color_labels_right[ch][0],
(1.0f-f)*color_labels_left[ch][1] + f*color_labels_right[ch][1],
(1.0f-f)*color_labels_left[ch][2] + f*color_labels_right[ch][2],
.5f); // blend over to make colors darker, so the overlay is more visible
cairo_rectangle(cr, width*i/(float)cells, height*j/(float)cells, width/(float)cells, height/(float)cells);
cairo_fill(cr);
}
}
// draw grid
cairo_set_line_width(cr, .4);
cairo_set_source_rgb (cr, .1, .1, .1);
if(dev->histogram_type == DT_DEV_HISTOGRAM_WAVEFORM)
dt_draw_waveform_lines(cr, 0, 0, width, height);
else
dt_draw_grid(cr, 4, 0, 0, width, height);
// if autoscale_ab is on: do not display a and b curves
if (autoscale_ab && ch != ch_L) goto finally;
// draw nodes positions
cairo_set_line_width(cr, 1.);
cairo_set_source_rgb(cr, 0.6, 0.6, 0.6);
cairo_translate(cr, 0, height);
for(int k=0; k<nodes; k++)
{
cairo_arc(cr, tonecurve[k].x*width, -tonecurve[k].y*height, 3, 0, 2.*M_PI);
cairo_stroke(cr);
}
// draw selected cursor
cairo_set_line_width(cr, 1.);
// draw histogram in background
// only if module is enabled
if (self->enabled)
{
float *hist, hist_max;
float *raw_mean, *raw_min, *raw_max;
float *raw_mean_output;
float picker_mean[3], picker_min[3], picker_max[3];
char text[256];
raw_mean = self->picked_color;
raw_min = self->picked_color_min;
raw_max = self->picked_color_max;
raw_mean_output = self->picked_output_color;
hist = self->histogram;
hist_max = dev->histogram_type == DT_DEV_HISTOGRAM_LINEAR?self->histogram_max[ch]:logf(1.0 + self->histogram_max[ch]);
if(hist && hist_max > 0)
{
cairo_save(cr);
cairo_scale(cr, width/63.0, -(height-5)/(float)hist_max);
cairo_set_source_rgba(cr, .2, .2, .2, 0.5);
dt_draw_histogram_8(cr, hist, ch, dev->histogram_type == DT_DEV_HISTOGRAM_WAVEFORM?DT_DEV_HISTOGRAM_LOGARITHMIC:dev->histogram_type); // TODO: make draw handle waveform histograms
cairo_restore(cr);
}
if(self->request_color_pick)
{
// the global live samples ...
GSList *samples = darktable.lib->proxy.colorpicker.live_samples;
dt_colorpicker_sample_t *sample = NULL;
while(samples)
{
sample = samples->data;
picker_scale(sample->picked_color_lab_mean, picker_mean);
picker_scale(sample->picked_color_lab_min, picker_min);
picker_scale(sample->picked_color_lab_max, picker_max);
cairo_set_source_rgba(cr, 0.5, 0.7, 0.5, 0.15);
cairo_rectangle(cr, width*picker_min[ch], 0, width*fmax(picker_max[ch]-picker_min[ch], 0.0f), -height);
cairo_fill(cr);
cairo_set_source_rgba(cr, 0.5, 0.7, 0.5, 0.5);
cairo_move_to(cr, width*picker_mean[ch], 0);
cairo_line_to(cr, width*picker_mean[ch], -height);
cairo_stroke(cr);
samples = g_slist_next(samples);
}
// ... and the local sample
picker_scale(raw_mean, picker_mean);
picker_scale(raw_min, picker_min);
picker_scale(raw_max, picker_max);
cairo_set_source_rgba(cr, 0.7, 0.5, 0.5, 0.33);
cairo_rectangle(cr, width*picker_min[ch], 0, width*fmax(picker_max[ch]-picker_min[ch], 0.0f), -height);
cairo_fill(cr);
cairo_set_source_rgba(cr, 0.9, 0.7, 0.7, 0.5);
cairo_move_to(cr, width*picker_mean[ch], 0);
cairo_line_to(cr, width*picker_mean[ch], -height);
cairo_stroke(cr);
snprintf(text, 256, "%.1f → %.1f", raw_mean[ch], raw_mean_output[ch]);
cairo_set_source_rgb(cr, 0.1, 0.1, 0.1);
cairo_select_font_face (cr, "sans-serif", CAIRO_FONT_SLANT_NORMAL, CAIRO_FONT_WEIGHT_BOLD);
cairo_set_font_size (cr, 0.06*height);
cairo_move_to (cr, 0.02f*width, -0.94*height);
cairo_show_text(cr, text);
cairo_stroke(cr);
}
}
if(c->selected >= 0)
{
cairo_set_source_rgb(cr, .9, .9, .9);
cairo_arc(cr, tonecurve[c->selected].x*width, -tonecurve[c->selected].y*height, 4, 0, 2.*M_PI);
cairo_stroke(cr);
}
// draw curve
cairo_set_line_width(cr, 2.);
cairo_set_source_rgb(cr, .9, .9, .9);
// cairo_set_line_cap (cr, CAIRO_LINE_CAP_SQUARE);
cairo_move_to(cr, 0, -height*c->draw_ys[0]);
for(int k=1; k<DT_IOP_TONECURVE_RES; k++)
{
const float xx = k/(DT_IOP_TONECURVE_RES-1.0);
if(xx > xm)
{
const float yy = dt_iop_eval_exp(unbounded_coeffs, xx);
cairo_line_to(cr, xx*width, - height*yy);
}
else
{
cairo_line_to(cr, xx*width, - height*c->draw_ys[k]);
}
}
cairo_stroke(cr);
finally:
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;
}
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 dt_iop_basecurve_draw(GtkWidget *widget, cairo_t *crf, gpointer user_data)
{
dt_iop_module_t *self = (dt_iop_module_t *)user_data;
dt_iop_basecurve_gui_data_t *c = (dt_iop_basecurve_gui_data_t *)self->gui_data;
dt_iop_basecurve_params_t *p = (dt_iop_basecurve_params_t *)self->params;
int nodes = p->basecurve_nodes[0];
dt_iop_basecurve_node_t *basecurve = p->basecurve[0];
if(c->minmax_curve_type != p->basecurve_type[0] || c->minmax_curve_nodes != p->basecurve_nodes[0])
{
dt_draw_curve_destroy(c->minmax_curve);
c->minmax_curve = dt_draw_curve_new(0.0, 1.0, p->basecurve_type[0]);
c->minmax_curve_nodes = p->basecurve_nodes[0];
c->minmax_curve_type = p->basecurve_type[0];
for(int k = 0; k < p->basecurve_nodes[0]; k++)
(void)dt_draw_curve_add_point(c->minmax_curve, p->basecurve[0][k].x, p->basecurve[0][k].y);
}
else
{
for(int k = 0; k < p->basecurve_nodes[0]; k++)
dt_draw_curve_set_point(c->minmax_curve, k, p->basecurve[0][k].x, p->basecurve[0][k].y);
}
dt_draw_curve_t *minmax_curve = c->minmax_curve;
dt_draw_curve_calc_values(minmax_curve, 0.0, 1.0, DT_IOP_TONECURVE_RES, c->draw_xs, c->draw_ys);
const float xm = basecurve[nodes - 1].x;
const float x[4] = { 0.7f * xm, 0.8f * xm, 0.9f * xm, 1.0f * xm };
const float y[4] = { c->draw_ys[CLAMP((int)(x[0] * DT_IOP_TONECURVE_RES), 0, DT_IOP_TONECURVE_RES - 1)],
c->draw_ys[CLAMP((int)(x[1] * DT_IOP_TONECURVE_RES), 0, DT_IOP_TONECURVE_RES - 1)],
c->draw_ys[CLAMP((int)(x[2] * DT_IOP_TONECURVE_RES), 0, DT_IOP_TONECURVE_RES - 1)],
c->draw_ys[CLAMP((int)(x[3] * DT_IOP_TONECURVE_RES), 0, DT_IOP_TONECURVE_RES - 1)] };
float unbounded_coeffs[3];
dt_iop_estimate_exp(x, y, 4, unbounded_coeffs);
const int inset = DT_GUI_CURVE_EDITOR_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);
// clear bg
cairo_set_source_rgb(cr, .2, .2, .2);
cairo_paint(cr);
cairo_translate(cr, inset, inset);
width -= 2 * inset;
height -= 2 * inset;
#if 0
// draw shadow around
float alpha = 1.0f;
for(int k=0; k<inset; k++)
{
cairo_rectangle(cr, -k, -k, width + 2*k, height + 2*k);
cairo_set_source_rgba(cr, 0, 0, 0, alpha);
alpha *= 0.6f;
cairo_fill(cr);
}
#else
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);
#endif
cairo_set_source_rgb(cr, .3, .3, .3);
cairo_rectangle(cr, 0, 0, width, height);
cairo_fill(cr);
cairo_translate(cr, 0, height);
cairo_scale(cr, 1.0f, -1.0f);
// draw grid
cairo_set_line_width(cr, DT_PIXEL_APPLY_DPI(.4));
cairo_set_source_rgb(cr, .1, .1, .1);
if(c->loglogscale)
dt_draw_loglog_grid(cr, 4, 0, 0, width, height, c->loglogscale);
else
dt_draw_grid(cr, 4, 0, 0, width, height);
// draw nodes positions
cairo_set_line_width(cr, DT_PIXEL_APPLY_DPI(1.));
cairo_set_source_rgb(cr, 0.6, 0.6, 0.6);
for(int k = 0; k < nodes; k++)
{
const float x = to_log(basecurve[k].x, c->loglogscale), y = to_log(basecurve[k].y, c->loglogscale);
cairo_arc(cr, x * width, y * height, DT_PIXEL_APPLY_DPI(3), 0, 2. * M_PI);
cairo_stroke(cr);
}
// draw selected cursor
cairo_set_line_width(cr, DT_PIXEL_APPLY_DPI(1.));
if(c->selected >= 0)
{
cairo_set_source_rgb(cr, .9, .9, .9);
const float x = to_log(basecurve[c->selected].x, c->loglogscale),
y = to_log(basecurve[c->selected].y, c->loglogscale);
cairo_arc(cr, x * width, y * height, DT_PIXEL_APPLY_DPI(4), 0, 2. * M_PI);
cairo_stroke(cr);
}
// draw curve
cairo_set_line_width(cr, DT_PIXEL_APPLY_DPI(2.));
cairo_set_source_rgb(cr, .9, .9, .9);
// cairo_set_line_cap (cr, CAIRO_LINE_CAP_SQUARE);
cairo_move_to(cr, 0, height * to_log(c->draw_ys[0], c->loglogscale));
for(int k = 1; k < DT_IOP_TONECURVE_RES; k++)
{
const float xx = k / (DT_IOP_TONECURVE_RES - 1.0);
if(xx > xm)
{
const float yy = dt_iop_eval_exp(unbounded_coeffs, xx);
const float x = to_log(xx, c->loglogscale), y = to_log(yy, c->loglogscale);
cairo_line_to(cr, x * width, height * y);
}
else
{
const float yy = c->draw_ys[k];
const float x = to_log(xx, c->loglogscale), y = to_log(yy, c->loglogscale);
cairo_line_to(cr, x * width, height * y);
}
}
cairo_stroke(cr);
cairo_destroy(cr);
cairo_set_source_surface(crf, cst, 0, 0);
cairo_paint(crf);
cairo_surface_destroy(cst);
return TRUE;
}
void commit_params(struct dt_iop_module_t *self, dt_iop_params_t *p1, dt_dev_pixelpipe_t *pipe,
dt_dev_pixelpipe_iop_t *piece)
{
dt_iop_tonecurve_data_t *d = (dt_iop_tonecurve_data_t *)(piece->data);
dt_iop_tonecurve_params_t *p = (dt_iop_tonecurve_params_t *)p1;
if(pipe->type == DT_DEV_PIXELPIPE_PREVIEW)
piece->request_histogram |= (DT_REQUEST_ON);
else
piece->request_histogram &= ~(DT_REQUEST_ON);
for(int ch = 0; ch < ch_max; ch++)
{
// take care of possible change of curve type or number of nodes (not yet implemented in UI)
if(d->curve_type[ch] != p->tonecurve_type[ch] || d->curve_nodes[ch] != p->tonecurve_nodes[ch])
{
dt_draw_curve_destroy(d->curve[ch]);
d->curve[ch] = dt_draw_curve_new(0.0, 1.0, p->tonecurve_type[ch]);
d->curve_nodes[ch] = p->tonecurve_nodes[ch];
d->curve_type[ch] = p->tonecurve_type[ch];
for(int k = 0; k < p->tonecurve_nodes[ch]; k++)
(void)dt_draw_curve_add_point(d->curve[ch], p->tonecurve[ch][k].x, p->tonecurve[ch][k].y);
}
else
{
for(int k = 0; k < p->tonecurve_nodes[ch]; k++)
dt_draw_curve_set_point(d->curve[ch], k, p->tonecurve[ch][k].x, p->tonecurve[ch][k].y);
}
dt_draw_curve_calc_values(d->curve[ch], 0.0f, 1.0f, 0x10000, NULL, d->table[ch]);
}
for(int k = 0; k < 0x10000; k++) d->table[ch_L][k] *= 100.0f;
for(int k = 0; k < 0x10000; k++) d->table[ch_a][k] = d->table[ch_a][k] * 256.0f - 128.0f;
for(int k = 0; k < 0x10000; k++) d->table[ch_b][k] = d->table[ch_b][k] * 256.0f - 128.0f;
d->autoscale_ab = p->tonecurve_autoscale_ab;
d->unbound_ab = p->tonecurve_unbound_ab;
// extrapolation for L-curve (right hand side only):
const float xm_L = p->tonecurve[ch_L][p->tonecurve_nodes[ch_L] - 1].x;
const float x_L[4] = { 0.7f * xm_L, 0.8f * xm_L, 0.9f * xm_L, 1.0f * xm_L };
const float y_L[4] = { d->table[ch_L][CLAMP((int)(x_L[0] * 0x10000ul), 0, 0xffff)],
d->table[ch_L][CLAMP((int)(x_L[1] * 0x10000ul), 0, 0xffff)],
d->table[ch_L][CLAMP((int)(x_L[2] * 0x10000ul), 0, 0xffff)],
d->table[ch_L][CLAMP((int)(x_L[3] * 0x10000ul), 0, 0xffff)] };
dt_iop_estimate_exp(x_L, y_L, 4, d->unbounded_coeffs_L);
// extrapolation for a-curve right side:
const float xm_ar = p->tonecurve[ch_a][p->tonecurve_nodes[ch_a] - 1].x;
const float x_ar[4] = { 0.7f * xm_ar, 0.8f * xm_ar, 0.9f * xm_ar, 1.0f * xm_ar };
const float y_ar[4] = { d->table[ch_a][CLAMP((int)(x_ar[0] * 0x10000ul), 0, 0xffff)],
d->table[ch_a][CLAMP((int)(x_ar[1] * 0x10000ul), 0, 0xffff)],
d->table[ch_a][CLAMP((int)(x_ar[2] * 0x10000ul), 0, 0xffff)],
d->table[ch_a][CLAMP((int)(x_ar[3] * 0x10000ul), 0, 0xffff)] };
dt_iop_estimate_exp(x_ar, y_ar, 4, d->unbounded_coeffs_ab);
// extrapolation for a-curve left side (we need to mirror the x-axis):
const float xm_al = 1.0f - p->tonecurve[ch_a][0].x;
const float x_al[4] = { 0.7f * xm_al, 0.8f * xm_al, 0.9f * xm_al, 1.0f * xm_al };
const float y_al[4] = { d->table[ch_a][CLAMP((int)((1.0f - x_al[0]) * 0x10000ul), 0, 0xffff)],
d->table[ch_a][CLAMP((int)((1.0f - x_al[1]) * 0x10000ul), 0, 0xffff)],
d->table[ch_a][CLAMP((int)((1.0f - x_al[2]) * 0x10000ul), 0, 0xffff)],
d->table[ch_a][CLAMP((int)((1.0f - x_al[3]) * 0x10000ul), 0, 0xffff)] };
dt_iop_estimate_exp(x_al, y_al, 4, d->unbounded_coeffs_ab + 3);
// extrapolation for b-curve right side:
const float xm_br = p->tonecurve[ch_b][p->tonecurve_nodes[ch_b] - 1].x;
const float x_br[4] = { 0.7f * xm_br, 0.8f * xm_br, 0.9f * xm_br, 1.0f * xm_br };
const float y_br[4] = { d->table[ch_b][CLAMP((int)(x_br[0] * 0x10000ul), 0, 0xffff)],
d->table[ch_b][CLAMP((int)(x_br[1] * 0x10000ul), 0, 0xffff)],
d->table[ch_b][CLAMP((int)(x_br[2] * 0x10000ul), 0, 0xffff)],
d->table[ch_b][CLAMP((int)(x_br[3] * 0x10000ul), 0, 0xffff)] };
dt_iop_estimate_exp(x_br, y_br, 4, d->unbounded_coeffs_ab + 6);
// extrapolation for b-curve left side (we need to mirror the x-axis):
const float xm_bl = 1.0f - p->tonecurve[ch_b][0].x;
const float x_bl[4] = { 0.7f * xm_bl, 0.8f * xm_bl, 0.9f * xm_bl, 1.0f * xm_bl };
const float y_bl[4] = { d->table[ch_b][CLAMP((int)((1.0f - x_bl[0]) * 0x10000ul), 0, 0xffff)],
d->table[ch_b][CLAMP((int)((1.0f - x_bl[1]) * 0x10000ul), 0, 0xffff)],
d->table[ch_b][CLAMP((int)((1.0f - x_bl[2]) * 0x10000ul), 0, 0xffff)],
d->table[ch_b][CLAMP((int)((1.0f - x_bl[3]) * 0x10000ul), 0, 0xffff)] };
dt_iop_estimate_exp(x_bl, y_bl, 4, d->unbounded_coeffs_ab + 9);
}
static gboolean dt_iop_tonecurve_expose(GtkWidget *widget, GdkEventExpose *event, gpointer user_data)
{
dt_iop_module_t *self = (dt_iop_module_t *)user_data;
dt_iop_tonecurve_gui_data_t *c = (dt_iop_tonecurve_gui_data_t *)self->gui_data;
dt_iop_tonecurve_params_t *p = (dt_iop_tonecurve_params_t *)self->params;
for(int k=0; k<6; k++) dt_draw_curve_set_point(c->minmax_curve, k, p->tonecurve_x[k], p->tonecurve_y[k]);
const int inset = DT_GUI_CURVE_EDITOR_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);
// clear bg
cairo_set_source_rgb (cr, .2, .2, .2);
cairo_paint(cr);
cairo_translate(cr, inset, inset);
width -= 2*inset;
height -= 2*inset;
#if 0
// draw shadow around
float alpha = 1.0f;
for(int k=0; k<inset; k++)
{
cairo_rectangle(cr, -k, -k, width + 2*k, height + 2*k);
cairo_set_source_rgba(cr, 0, 0, 0, alpha);
alpha *= 0.6f;
cairo_fill(cr);
}
#else
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);
#endif
cairo_set_source_rgb (cr, .3, .3, .3);
cairo_rectangle(cr, 0, 0, width, height);
cairo_fill(cr);
if(c->mouse_y > 0 || c->dragging)
{
float oldx1, oldy1;
oldx1 = p->tonecurve_x[c->selected];
oldy1 = p->tonecurve_y[c->selected];
if(c->selected == 0) dt_draw_curve_set_point(c->minmax_curve, 1, p->tonecurve_x[1], fmaxf(c->selected_min, p->tonecurve_y[1]));
if(c->selected == 2) dt_draw_curve_set_point(c->minmax_curve, 1, p->tonecurve_x[1], fminf(c->selected_min, fmaxf(0.0, p->tonecurve_y[1] + DT_GUI_CURVE_INFL*(c->selected_min - oldy1))));
if(c->selected == 3) dt_draw_curve_set_point(c->minmax_curve, 4, p->tonecurve_x[4], fmaxf(c->selected_min, fminf(1.0, p->tonecurve_y[4] + DT_GUI_CURVE_INFL*(c->selected_min - oldy1))));
if(c->selected == 5) dt_draw_curve_set_point(c->minmax_curve, 4, p->tonecurve_x[4], fminf(c->selected_min, p->tonecurve_y[4]));
dt_draw_curve_set_point(c->minmax_curve, c->selected, oldx1, c->selected_min);
dt_draw_curve_calc_values(c->minmax_curve, 0.0, 1.0, DT_IOP_TONECURVE_RES, c->draw_min_xs, c->draw_min_ys);
if(c->selected == 0) dt_draw_curve_set_point(c->minmax_curve, 1, p->tonecurve_x[1], fmaxf(c->selected_max, p->tonecurve_y[1]));
if(c->selected == 2) dt_draw_curve_set_point(c->minmax_curve, 1, p->tonecurve_x[1], fminf(c->selected_max, fmaxf(0.0, p->tonecurve_y[1] + DT_GUI_CURVE_INFL*(c->selected_max - oldy1))));
if(c->selected == 3) dt_draw_curve_set_point(c->minmax_curve, 4, p->tonecurve_x[4], fmaxf(c->selected_max, fminf(1.0, p->tonecurve_y[4] + DT_GUI_CURVE_INFL*(c->selected_max - oldy1))));
if(c->selected == 5) dt_draw_curve_set_point(c->minmax_curve, 4, p->tonecurve_x[4], fminf(c->selected_max, p->tonecurve_y[4]));
dt_draw_curve_set_point (c->minmax_curve, c->selected, oldx1, c->selected_max);
dt_draw_curve_calc_values(c->minmax_curve, 0.0, 1.0, DT_IOP_TONECURVE_RES, c->draw_max_xs, c->draw_max_ys);
}
for(int k=0; k<6; k++) dt_draw_curve_set_point(c->minmax_curve, k, p->tonecurve_x[k], p->tonecurve_y[k]);
dt_draw_curve_calc_values(c->minmax_curve, 0.0, 1.0, DT_IOP_TONECURVE_RES, c->draw_xs, c->draw_ys);
// draw grid
cairo_set_line_width(cr, .4);
cairo_set_source_rgb (cr, .1, .1, .1);
dt_draw_grid(cr, 4, 0, 0, width, height);
// draw x positions
cairo_set_line_width(cr, 1.);
cairo_set_source_rgb(cr, 0.6, 0.6, 0.6);
const float arrw = 7.0f;
for(int k=1; k<5; k++)
{
cairo_move_to(cr, width*p->tonecurve_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_set_line_width(cr, 1.);
cairo_translate(cr, 0, height);
// draw lum h istogram in background
dt_develop_t *dev = darktable.develop;
float *hist, hist_max;
hist = dev->histogram_pre_tonecurve;
hist_max = dev->histogram_pre_tonecurve_max;
if(hist_max > 0)
{
cairo_save(cr);
cairo_scale(cr, width/63.0, -(height-5)/(float)hist_max);
cairo_set_source_rgba(cr, .2, .2, .2, 0.5);
dt_draw_histogram_8(cr, hist, 3);
cairo_restore(cr);
}
if(c->mouse_y > 0 || c->dragging)
{
// draw min/max, if selected
cairo_set_source_rgba(cr, .6, .6, .6, .5);
cairo_move_to(cr, 0, - height*c->draw_min_ys[0]);
for(int k=1; k<DT_IOP_TONECURVE_RES; k++) cairo_line_to(cr, k*width/(DT_IOP_TONECURVE_RES-1.0), - height*c->draw_min_ys[k]);
cairo_line_to(cr, width, - height*c->draw_min_ys[DT_IOP_TONECURVE_RES-1]);
cairo_line_to(cr, width, - height*c->draw_max_ys[DT_IOP_TONECURVE_RES-1]);
for(int k=DT_IOP_TONECURVE_RES-2; k>=0; k--) cairo_line_to(cr, k*width/(DT_IOP_TONECURVE_RES-1.0), - height*c->draw_max_ys[k]);
cairo_close_path(cr);
cairo_fill(cr);
// draw mouse focus circle
cairo_set_source_rgb(cr, .9, .9, .9);
const float pos = MAX(0, (DT_IOP_TONECURVE_RES-1) * c->mouse_x/(float)width - 1);
int k = (int)pos;
const float f = k - pos;
if(k >= DT_IOP_TONECURVE_RES-1) k = DT_IOP_TONECURVE_RES - 2;
float ht = -height*(f*c->draw_ys[k] + (1-f)*c->draw_ys[k+1]);
cairo_arc(cr, c->mouse_x, ht, 4, 0, 2.*M_PI);
cairo_stroke(cr);
}
// draw curve
cairo_set_line_width(cr, 2.);
cairo_set_source_rgb(cr, .9, .9, .9);
// cairo_set_line_cap (cr, CAIRO_LINE_CAP_SQUARE);
cairo_move_to(cr, 0, -height*c->draw_ys[0]);
for(int k=1; k<DT_IOP_TONECURVE_RES; k++) cairo_line_to(cr, k*width/(DT_IOP_TONECURVE_RES-1.0), - height*c->draw_ys[k]);
cairo_stroke(cr);
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;
}
static gboolean
colorzones_expose(GtkWidget *widget, GdkEventExpose *event, gpointer user_data)
{
dt_iop_module_t *self = (dt_iop_module_t *)user_data;
dt_iop_colorzones_gui_data_t *c = (dt_iop_colorzones_gui_data_t *)self->gui_data;
dt_iop_colorzones_params_t p = *(dt_iop_colorzones_params_t *)self->params;
int ch = (int)c->channel;
if(p.channel == DT_IOP_COLORZONES_h)
dt_draw_curve_set_point(c->minmax_curve, 0, p.equalizer_x[ch][DT_IOP_COLORZONES_BANDS-2]-1.0, p.equalizer_y[ch][DT_IOP_COLORZONES_BANDS-2]);
else
dt_draw_curve_set_point(c->minmax_curve, 0, p.equalizer_x[ch][DT_IOP_COLORZONES_BANDS-2]-1.0, p.equalizer_y[ch][0]);
for(int k=0; k<DT_IOP_COLORZONES_BANDS; k++) dt_draw_curve_set_point(c->minmax_curve, k+1, p.equalizer_x[ch][k], p.equalizer_y[ch][k]);
if(p.channel == DT_IOP_COLORZONES_h)
dt_draw_curve_set_point(c->minmax_curve, DT_IOP_COLORZONES_BANDS+1, p.equalizer_x[ch][1]+1.0, p.equalizer_y[ch][1]);
else
dt_draw_curve_set_point(c->minmax_curve, DT_IOP_COLORZONES_BANDS+1, p.equalizer_x[ch][1]+1.0, p.equalizer_y[ch][DT_IOP_COLORZONES_BANDS-1]);
const int inset = DT_IOP_COLORZONES_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);
// clear bg, match color of the notebook tabs:
GtkStyle *style = gtk_widget_get_style(GTK_WIDGET(c->channel_tabs));
cairo_set_source_rgb (cr, style->bg[GTK_STATE_NORMAL].red/65535.0f,
style->bg[GTK_STATE_NORMAL].green/65535.0f,
style->bg[GTK_STATE_NORMAL].blue/65535.0f);
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);
if(c->mouse_y > 0 || c->dragging)
{
// draw min/max curves:
dt_iop_colorzones_get_params(&p, c->channel, c->mouse_x, 1., c->mouse_radius);
if(p.channel == DT_IOP_COLORZONES_h)
dt_draw_curve_set_point(c->minmax_curve, 0, p.equalizer_x[ch][DT_IOP_COLORZONES_BANDS-2]-1.0, p.equalizer_y[ch][DT_IOP_COLORZONES_BANDS-2]);
else
dt_draw_curve_set_point(c->minmax_curve, 0, p.equalizer_x[ch][DT_IOP_COLORZONES_BANDS-2]-1.0, p.equalizer_y[ch][0]);
for(int k=0; k<DT_IOP_COLORZONES_BANDS; k++)
dt_draw_curve_set_point(c->minmax_curve, k+1, p.equalizer_x[ch][k], p.equalizer_y[ch][k]);
if(p.channel == DT_IOP_COLORZONES_h)
dt_draw_curve_set_point(c->minmax_curve, DT_IOP_COLORZONES_BANDS+1, p.equalizer_x[ch][1]+1.0, p.equalizer_y[ch][1]);
else
dt_draw_curve_set_point(c->minmax_curve, DT_IOP_COLORZONES_BANDS+1, p.equalizer_x[ch][1]+1.0, p.equalizer_y[ch][DT_IOP_COLORZONES_BANDS-1]);
dt_draw_curve_calc_values(c->minmax_curve, 0.0, 1.0, DT_IOP_COLORZONES_RES, c->draw_min_xs, c->draw_min_ys);
p = *(dt_iop_colorzones_params_t *)self->params;
dt_iop_colorzones_get_params(&p, c->channel, c->mouse_x, .0, c->mouse_radius);
if(p.channel == DT_IOP_COLORZONES_h)
dt_draw_curve_set_point(c->minmax_curve, 0, p.equalizer_x[ch][DT_IOP_COLORZONES_BANDS-2]-1.0, p.equalizer_y[ch][DT_IOP_COLORZONES_BANDS-2]);
else
dt_draw_curve_set_point(c->minmax_curve, 0, p.equalizer_x[ch][DT_IOP_COLORZONES_BANDS-2]-1.0, p.equalizer_y[ch][0]);
for(int k=0; k<DT_IOP_COLORZONES_BANDS; k++)
dt_draw_curve_set_point(c->minmax_curve, k+1, p.equalizer_x[ch][k], p.equalizer_y[ch][k]);
if(p.channel == DT_IOP_COLORZONES_h)
dt_draw_curve_set_point(c->minmax_curve, DT_IOP_COLORZONES_BANDS+1, p.equalizer_x[ch][1]+1.0, p.equalizer_y[ch][1]);
else
dt_draw_curve_set_point(c->minmax_curve, DT_IOP_COLORZONES_BANDS+1, p.equalizer_x[ch][1]+1.0, p.equalizer_y[ch][DT_IOP_COLORZONES_BANDS-1]);
dt_draw_curve_calc_values(c->minmax_curve, 0.0, 1.0, DT_IOP_COLORZONES_RES, c->draw_max_xs, c->draw_max_ys);
}
if(self->picked_color[0] == 0.0)
{
self->picked_color[0] = 50.0f;
self->picked_color[1] = 0.0f;
self->picked_color[2] = -5.0f;
}
const float pickC = sqrtf(self->picked_color[1]*self->picked_color[1] + self->picked_color[2]*self->picked_color[2]);
const int cellsi = 16, cellsj = 9;
for(int j=0; j<cellsj; j++) for(int i=0; i<cellsi; i++)
{
double rgb[3] = {0.5, 0.5, 0.5};
float jj = 1.0 - (j-.5)/(cellsj-1.), ii = (i+.5)/(cellsi-1.);
cmsCIELab Lab;
switch(p.channel)
{
// select by channel, abscissa:
case DT_IOP_COLORZONES_L:
Lab.L = ii * 100.0;
Lab.a = self->picked_color[1];
Lab.b = self->picked_color[2];
break;
case DT_IOP_COLORZONES_C:
Lab.L = 50.0;
Lab.a = 64.0*ii*self->picked_color[1]/pickC;
Lab.b = 64.0*ii*self->picked_color[2]/pickC;
break;
default: // case DT_IOP_COLORZONES_h:
Lab.L = 50.0;
Lab.a = cosf(2.0*M_PI*ii) * 64.0f;
Lab.b = sinf(2.0*M_PI*ii) * 64.0f;
break;
}
const float L0 = Lab.L;
const float angle = atan2f(Lab.b, Lab.a);
switch(c->channel)
{
// channel to be altered:
case DT_IOP_COLORZONES_L:
Lab.L += - 50.0 + 100.0*jj;
break;
case DT_IOP_COLORZONES_C:
Lab.a *= 2.0f*jj;
Lab.b *= 2.0f*jj;
break;
default: // DT_IOP_COLORZONES_h
Lab.a = cosf(angle + 2.0*M_PI*(jj-.5f)) * 64.0;
Lab.b = sinf(angle + 2.0*M_PI*(jj-.5f)) * 64.0;
if(p.channel == DT_IOP_COLORZONES_C)
{
Lab.a *= ii;
Lab.b *= ii;
}
break;
}
// gammut mapping magic from iop/exposure.c:
const float Lwhite = 100.0f, Lclip = 20.0f;
const float Lcap = fminf(100.0, Lab.L);
const float clip = 1.0 - (Lcap - L0)*(1.0/100.0)*fminf(Lwhite-Lclip, fmaxf(0.0, Lab.L - Lclip))/(Lwhite-Lclip);
const float clip2 = clip*clip*clip;
Lab.a *= Lab.L/L0 * clip2;
Lab.b *= Lab.L/L0 * clip2;
cmsDoTransform(c->xform, &Lab, rgb, 1);
cairo_set_source_rgb (cr, rgb[0], rgb[1], rgb[2]);
cairo_rectangle(cr, width*i/(float)cellsi, height*j/(float)cellsj, width/(float)cellsi-1, height/(float)cellsj-1);
cairo_fill(cr);
}
// draw marker for currently selected color:
float picked_i = -1.0;
switch(p.channel)
{
// select by channel, abscissa:
case DT_IOP_COLORZONES_L:
picked_i = self->picked_color[0]/100.0;
break;
case DT_IOP_COLORZONES_C:
picked_i = pickC / 128.0;
break;
default: // case DT_IOP_COLORZONES_h:
picked_i = fmodf(atan2f(self->picked_color[2], self->picked_color[1]) + 2.0*M_PI, 2.0*M_PI)/(2.0*M_PI);
break;
}
cairo_save(cr);
cairo_set_source_rgb(cr, 1.0, 1.0, 1.0);
cairo_set_operator(cr, CAIRO_OPERATOR_XOR);
cairo_set_line_width(cr, 2.);
cairo_move_to(cr, width*picked_i, 0.0);
cairo_line_to(cr, width*picked_i, height);
cairo_stroke(cr);
cairo_restore(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_COLORZONES_BANDS; k++)
{
cairo_move_to(cr, width*p.equalizer_x[c->channel][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.);
for(int i=0; i<3; i++)
{
// draw curves, selected last.
int ch = ((int)c->channel+i+1)%3;
if(i == 2) cairo_set_source_rgba(cr, .7, .7, .7, 1.0);
else cairo_set_source_rgba(cr, .7, .7, .7, 0.3);
p = *(dt_iop_colorzones_params_t *)self->params;
if(p.channel == DT_IOP_COLORZONES_h)
dt_draw_curve_set_point(c->minmax_curve, 0, p.equalizer_x[ch][DT_IOP_COLORZONES_BANDS-2]-1.0, p.equalizer_y[ch][DT_IOP_COLORZONES_BANDS-2]);
else
dt_draw_curve_set_point(c->minmax_curve, 0, p.equalizer_x[ch][DT_IOP_COLORZONES_BANDS-2]-1.0, p.equalizer_y[ch][0]);
for(int k=0; k<DT_IOP_COLORZONES_BANDS; k++)
dt_draw_curve_set_point(c->minmax_curve, k+1, p.equalizer_x[ch][k], p.equalizer_y[ch][k]);
if(p.channel == DT_IOP_COLORZONES_h)
dt_draw_curve_set_point(c->minmax_curve, DT_IOP_COLORZONES_BANDS+1, p.equalizer_x[ch][1]+1.0, p.equalizer_y[ch][1]);
else
dt_draw_curve_set_point(c->minmax_curve, DT_IOP_COLORZONES_BANDS+1, p.equalizer_x[ch][1]+1.0, p.equalizer_y[ch][DT_IOP_COLORZONES_BANDS-1]);
dt_draw_curve_calc_values(c->minmax_curve, 0.0, 1.0, DT_IOP_COLORZONES_RES, c->draw_xs, c->draw_ys);
cairo_move_to(cr, 0*width/(float)(DT_IOP_COLORZONES_RES-1), - height*c->draw_ys[0]);
for(int k=1; k<DT_IOP_COLORZONES_RES; k++) cairo_line_to(cr, k*width/(float)(DT_IOP_COLORZONES_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_COLORZONES_BANDS; k++)
{
cairo_arc(cr, width*p.equalizer_x[c->channel][k], - height*p.equalizer_y[c->channel][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_COLORZONES_RES; k++) cairo_line_to(cr, k*width/(float)(DT_IOP_COLORZONES_RES-1), - height*c->draw_min_ys[k]);
for(int k=DT_IOP_COLORZONES_RES-1; k>=0; k--) cairo_line_to(cr, k*width/(float)(DT_IOP_COLORZONES_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_COLORZONES_RES * c->mouse_x;
int k = (int)pos;
const float f = k - pos;
if(k >= DT_IOP_COLORZONES_RES-1) k = DT_IOP_COLORZONES_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_set_operator(cr, CAIRO_OPERATOR_SOURCE);
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;
}
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;
}