bool Canvas::on_expose_event(GdkEventExpose * evt) {
Glib::RefPtr<Gdk::Window> window = get_window();
if (!window) return false; // no window yet?
if (!seen_first_expose_event) {
seen_first_expose_event = true;
main->controlsWindow().starting_position();
}
Cairo::RefPtr<Cairo::Context> cr = window->create_cairo_context();
if (!surface) return true; // Haven't rendered yet? Nothing we can do
if (evt) {
cr->rectangle(evt->area.x, evt->area.y, evt->area.width, evt->area.height);
cr->clip();
}
cr->set_source(surface, 0, 0);
cr->paint();
if (main->dragrect.is_active() && main->dragrect.surface_valid()) {
cr->save();
cr->set_source(main->dragrect.get_surface(), 0, 0);
cr->paint();
cr->restore();
}
if (main->hud_active()) {
Cairo::RefPtr<Cairo::Surface>& sfc = main->get_hud_surface();
if (sfc)
cr->set_source(sfc, 0, 0); // TODO HUD position
cr->paint();
}
return true;
}
bool guiRenderer2D::on_expose_event(GdkEventExpose* event) {
Glib::RefPtr<Gdk::Window> window = get_window();
if(window) {
Cairo::RefPtr<Cairo::Context> cr = window->create_cairo_context();
if(event) {
// clip to the area indicated by the expose event so that we only
// redraw the portion of the window that needs to be redrawn
//printf("event->area.x: %d, event->area.y: %d, event->area.width: %d, event->area.height: %d\n", event->area.x, event->area.y, event->area.width, event->area.height );
cr->rectangle(event->area.x, event->area.y, event->area.width, event->area.height);
cr->clip();
}
// Background
// cr->set_source_rgb(0.0, 0.0, 0.0);
cr->set_source_rgb(1.0, 1.0, 1.0);
cr->paint();
if(m_isRendering && m_layoutAvailable) {
Gtk::Allocation allocation = get_allocation();
int width = allocation.get_width();
int height = allocation.get_height();
if(width != m_widgetWidth || height != m_widgetHeight ) { // Allocation changed
rescaleSensorLayout(width, height);
}
drawMatrices(cr, width, height, false);
}
}
return true;
}
bool CircuitWidget::on_expose_event(GdkEventExpose* event)
{
(void)event; // placate compiler..
Glib::RefPtr<Gdk::Window> window = get_window();
if(window) {
Gtk::Allocation allocation = get_allocation();
const int width = allocation.get_width();
const int height = allocation.get_height();
double xc = width/2.0;
double yc = height/2.0;
Cairo::RefPtr<Cairo::Context> cr = window->create_cairo_context();
circuitDrawer.renderCairo(cr->cobj());
cr->rectangle(event->area.x, event->area.y,
event->area.width, event->area.height);
cr->clip();
cr->rectangle (0, 0, width, height);
cr->set_source_rgb (1,1,1);
cr->fill ();
cr->translate (xc-ext.width/2.0-cx*scale, yc-ext.height/2.0-cy*scale);
if (circuit) {
rects = circuitDrawer.draw(*circuit, drawarch, drawparallel, ext, wirestart, wireend, scale, selections, ft_default, wirelabels);
generate_layout_rects ();
}
}
return true;
}
/// Same as draw_buffer, with only the curr_item's full text
void
ViewDrawingArea::render_full_article()
{
// Dimensions of drawing area
Gtk::Allocation allocation = get_allocation();
const int height = allocation.get_height();
const int width = allocation.get_width();
Cairo::RefPtr<Cairo::Context> cr = _pixmap->create_cairo_context();
cr->reset_clip();
cr->rectangle (0.0, 0.0, width, height);
cr->clip();
cr->set_source_rgb (1.0, 1.0, 1.0);
cr->paint();
cr->set_source_rgb (0.0, 0.0, 0.0);
Item *item = AppContext::get().get_curr_item();
item->make_display_unit();
ItemDisplayUnit *du = item->get_display_unit();
du->render (cr, 0, -_vadj->get_value());
cr->show_page();
double h = du->get_height();
if (h > height)
_vadj->set_upper (h - height);
else
_vadj->set_upper (0);
_vadj->set_page_size (height);
_vadj->set_step_increment (height * 1.0/16.0);
_vadj->set_page_increment (height * 15.0/16.0);
_vadj->changed();
}
bool HelloWorld::on_canvas_expose(GdkEventExpose* event) {
Cairo::RefPtr<Cairo::Context> context = ara_canvas.get_window()->create_cairo_context();
context->rectangle(event->area.x, event->area.y, event->area.width,
event->area.height);
context->clip();
update_canvas();
return true;
}
bool AdvEnvGUIScope::on_expose_event(GdkEventExpose* event)
{
Glib::RefPtr<Gdk::Window> window = get_window();
if (window)
{
float len, x, y, xscale, yscale;
Gtk::Allocation allocation = get_allocation();
const int width = allocation.get_width();
const int height = allocation.get_height();
Cairo::RefPtr<Cairo::Context> cr = window->create_cairo_context();
cr->set_line_width(2.0);
cr->set_source_rgb(0.0, 0.0, 0.0);
cr->paint();
cr->set_source_rgb(0.0, 0.8, 0.0);
cr->rectangle(event->area.x, event->area.y, event->area.width, event->area.height);
cr->clip();
cr->move_to(width, height);
len = m_valueDelay + m_valueAttackTime1 + m_valueAttackTime2 + m_valueAttackTime3 + m_valueAttackTime4 + m_valueReleaseTime1 + m_valueReleaseTime2 + m_valueReleaseTime3 + SUSTAIN_LEN;
xscale = (float) width / len;
yscale = (float) (height - 6);
x = m_valueDelay * xscale;
cr->line_to((int) x, height);
x += m_valueAttackTime1 * xscale;
y = m_valueAttackLevel1 * yscale;
cr->line_to((int) x, height - (int) y);
x += m_valueAttackTime2 * xscale;
y = m_valueAttackLevel2 * yscale;
cr->line_to((int) x, height - (int) y);
x += m_valueAttackTime3 * xscale;
y = m_valueAttackLevel3 * yscale;
cr->line_to((int) x, height - (int) y);
x += m_valueAttackTime4 * xscale;
y = m_valueSustain * yscale;
cr->line_to((int) x, height - (int) y);
x += SUSTAIN_LEN * xscale;
cr->line_to((int) x, height - (int) y);
x += m_valueReleaseTime1 * xscale;
y = m_valueReleaseLevel1 * yscale;
cr->line_to((int) x, height - (int) y);
x += m_valueReleaseTime2 * xscale;
y = m_valueReleaseLevel2 * yscale;
cr->line_to((int) x, height - (int) y);
x += m_valueReleaseTime3 * xscale;
cr->line_to((int) x, height);
x = m_valueDelay * xscale;
cr->line_to((int) x, height);
cr->stroke();
}
return true;
}
bool MyPaintBox::on_expose_event(GdkEventExpose *event) {
call_paint_func(event);
Cairo::RefPtr<Cairo::Context> cr = Glib::wrap(event->window, true)->create_cairo_context();
gdk_cairo_region(cr->cobj(), event->region);
cr->clip();
cr->set_source_rgba(0.0, 0.0, 0.0, 1-background_adj->get_value());
cr->paint();
foreach(sigc::bind(sigc::mem_fun(this, &MyPaintBox::propagate_expose), event));
return true;
}
static void copyCairoClip(const Cairo::RefPtr<Cairo::Context> &src, const Cairo::RefPtr<Cairo::Context> &dst) {
try {
vector<Cairo::Rectangle> rects;
src->copy_clip_rectangle_list(rects);
for (auto& rect : rects) {
//cout << "clip " << rect.x << "x" << rect.y << "+" << rect.width << "+" << rect.height << endl;
dst->rectangle(rect.x, rect.y, rect.width, rect.height);
}
dst->clip();
} catch (...) {
Cairo::Rectangle rect;
src->get_clip_extents(rect.x, rect.y, rect.width, rect.height);
rect.width -= rect.x;
rect.height -= rect.y;
//cout << "clip " << rect.x << "x" << rect.y << "+" << rect.width << "+" << rect.height << endl;
dst->rectangle(rect.x, rect.y, rect.width, rect.height);
dst->clip();
}
}
bool VistaDiagrama::on_expose_event(GdkEventExpose* event) {
this->set_size_request(this->ancho, this->alto);
// Gonzalo : TEST
Glib::RefPtr<Gdk::Window> window = get_window();
if (window) {
Gtk::Allocation allocation = get_allocation();
const int width = allocation.get_width();
const int height = allocation.get_height();
// coordinates for the center of the window
int xc, yc;
xc = width / 2;
yc = height / 2;
Cairo::RefPtr<Cairo::Context> cr = window->create_cairo_context();
cr->set_line_width(10.0);
// clip to the area indicated by the expose event so that we only redraw
// the portion of the window that needs to be redrawn
cr->rectangle(event->area.x, event->area.y, event->area.width,
event->area.height);
cr->clip();
// draw red lines out from the center of the window
cr->set_line_cap(Cairo::LINE_CAP_ROUND);
cr->set_source_rgb(0.8, 0.0, 0.0);
cr->move_to(20, 20);
cr->line_to(xc, yc);
cr->line_to(20, height - 20);
cr->move_to(xc, yc);
cr->line_to(width - 20, yc);
cr->stroke();
//RefPtr<Context> cr = this->get_window()->create_cairo_context();
/*cr->set_source_rgba(1, 1, 1, 1); // white
cr->paint();
cr->set_source_rgba(0, 0, 0, 1); // negro
cr->move_to(0, 0);
cr->line_to(this->ancho, this->alto);
VistaEntidad * entidad = new VistaEntidad();
entidad->setposfin(10, 10);
entidad->setposfin(20, 20);
entidad->dibujar(cr);*/
}
//delete entidad;
return true;
}
void EmblemCellRenderer::do_render(const Cairo::RefPtr<Cairo::Context>& context, int widget, int background_area, Gdk::Rectangle &cell_area, int flags) {
context->translate(cell_area.get_x(), cell_area.get_y());
context->rectangle(0, 0, cell_area.get_width(), cell_area.get_height());
context->clip();
// TODO: Incorporate padding
context->push_group();
if (!this->_icon_name.empty()) {
Glib::RefPtr<Gdk::Pixbuf> pixbuf = this->_get_pixbuf(this->_icon_name, this->_icon_size);
context->set_operator(Cairo::OPERATOR_SOURCE);
// Assumes square icons; may break if we don't get the requested size
int height_offset = int((cell_area.get_height() - pixbuf->get_height())/2);
Gdk::Cairo::set_source_pixbuf(context, pixbuf, 0, height_offset);
context->rectangle(0, height_offset,
pixbuf->get_width(), pixbuf->get_height());
context->fill();
if (this->_tint_color) {
Gdk::RGBA* c = this->_tint_color;
gushort r = c->get_red();
gushort g = c->get_green();
gushort b = c->get_blue();
// Figure out the difference between our tint colour and an
// empirically determined (i.e., guessed) satisfying luma and
// adjust the base colours accordingly
double luma = (r + r + b + g + g + g) / 6.;
double extra_luma = (1.2 - luma) / 3.;
r = std::min(r + extra_luma, 1.);
g = std::min(g + extra_luma, 1.);
b = std::min(b + extra_luma, 1.);
context->set_source_rgba(r, g, b, 0.4);
context->set_operator(Cairo::OPERATOR_ATOP);
context->paint();
}
if (!this->_emblem_name.empty()) {
Glib::RefPtr<Gdk::Pixbuf> pixbuf = this->_get_pixbuf(this->_emblem_name, this->_emblem_size);
int x_offset = this->_icon_size - this->_emblem_size;
context->set_operator(Cairo::OPERATOR_OVER);
Gdk::Cairo::set_source_pixbuf(context, pixbuf, x_offset, 0);
context->rectangle(x_offset, 0,
cell_area.get_width(), this->_emblem_size);
context->fill();
}
}
context->pop_group_to_source();
context->set_operator(Cairo::OPERATOR_OVER);
context->paint();
}
Cairo::RefPtr<Cairo::ImageSurface> ImagesStorage::loadFrenchCard(Cairo::RefPtr<Cairo::ImageSurface> sourceImages, Preference::Card card)
{
Cairo::RefPtr<Cairo::ImageSurface> cardImage = Cairo::ImageSurface::create(Cairo::FORMAT_ARGB32,
sourceImages->get_width() / 13.0, sourceImages->get_height() / 5.0);
Cairo::RefPtr<Cairo::Context> cardsImagesDrawer = Cairo::Context::create( cardImage );
cardsImagesDrawer->set_source_rgb(1, 1, 1);
double x = getFrenchCardCoord(card, CT_X, sourceImages->get_width());
double y = getFrenchCardCoord(card, CT_Y, sourceImages->get_height());
cardsImagesDrawer->set_source(sourceImages, -x, -y);
cardsImagesDrawer->rectangle(0, 0, sourceImages->get_width() / 13.0, sourceImages->get_height() / 5.0);
cardsImagesDrawer->clip();
cardsImagesDrawer->paint();
return cardImage;
}
virtual bool on_expose_event(GdkEventExpose* event) {
Glib::RefPtr<Gdk::Window> window = get_window();
if (!window || !m_surface)
return true;
Cairo::RefPtr<Cairo::Context> cr = window->create_cairo_context();
cr->rectangle(event->area.x, event->area.y, event->area.width, event->area.height);
cr->clip();
cr->set_source(m_surface, 0, 0);
cr->paint();
return true;
}
bool Liveplay::window_expose_event(GdkEventExpose *event) {
Cairo::RefPtr<Cairo::Context> cr = Glib::wrap(event->window, true)->create_cairo_context();
Gtk::Allocation a = liveplay_canvas->get_allocation();
Gdk::Region region(a);
region.intersect(Glib::wrap(event->region, true));
Gdk::Cairo::add_region_to_path(cr, region);
cr->clip();
cr->set_operator(Cairo::OPERATOR_SOURCE);
cr->set_source_rgb(0,0,0);
cr->paint();
//gdk_cairo_set_source_window(cr->cobj(), liveplay_canvas->get_window()->gobj(), a.get_x(), a.get_y()); gtk 2.24
gdk_cairo_set_source_pixmap(cr->cobj(), liveplay_canvas->get_window()->gobj(), a.get_x(), a.get_y());
cr->paint_with_alpha(pow(brightness_adj->get_value(),2.2));
return false;
}
bool CompVis::on_expose_event(GdkEventExpose* event) {
Glib::RefPtr<Gdk::Window> window = get_window();
Allocation allocation = get_allocation();
const int width = allocation.get_width();
const int height = allocation.get_height();
Cairo::RefPtr<Cairo::Context> cr = window->create_cairo_context();
// clip to the area indicated by the expose event so that we only redraw
// the portion of the window that needs to be redrawn
cr->rectangle(event->area.x, event->area.y,
event->area.width, event->area.height);
cr->clip();
rms_dB = 20*log10(rms);
thresh_fraction = (threshold - p_ports[p_threshold].min)/threshold_range;
rms_dB_fraction = (rms_dB - p_ports[p_threshold].min)/threshold_range;
// Draw the graph
cr->set_source_rgb(0.5,0.1,0.1);
cr->set_line_width(2);
cr->move_to(0,height);
if (rms_dB <= threshold) {
cr->line_to(rms_dB_fraction*width, height-rms_dB_fraction*height);
cr->line_to(rms_dB_fraction*width, height);
cr->line_to(0,height);
} else {
cr->line_to(thresh_fraction*width, height-thresh_fraction*height);
cr->line_to(rms_dB_fraction*width, height-(thresh_fraction*height + height*(rms_dB_fraction-thresh_fraction)/ratio));
cr->line_to(rms_dB_fraction*width, height);
cr->line_to(0,height);
}
cr->fill();
// draw the compression curve:
cr->set_source_rgb(0.1,0.1,0.1);
cr->move_to(0, height);
cr->line_to(thresh_fraction*width, height-thresh_fraction*height);
cr->line_to(width, height-(thresh_fraction*height + height*(1-thresh_fraction)/ratio));
cr->stroke();
// Draw the gain
cr->set_source_rgb(0.1,0.8,0.1);
cr->rectangle(0,(float)height - (float)height*gain, 10, height);
cr->fill();
return true;
}
bool TrackOutput::on_expose_event(GdkEventExpose* event)
{
// This is where we draw on the window
Glib::RefPtr<Gdk::Window> window = get_window();
if(window) // Only run if Window does exist
{
// clip to the area indicated by the expose event so that we only redraw
// the portion of the window that needs to be redrawn
Cairo::RefPtr<Cairo::Context> cr = window->create_cairo_context();
cr->rectangle(event->area.x, event->area.y,
event->area.width, event->area.height);
cr->clip();
cr->rectangle(event->area.x, event->area.y,
event->area.width, event->area.height);
cr->set_source_rgb(0.1 , 0.1 , 0.1 );
cr->fill();
TrackOutputState* state = &stateStore->trackoutputState.at(ID);
if ( state->selected )
setColour(cr, COLOUR_GREY_3 );
else
setColour(cr, COLOUR_GREY_4 );
cr->rectangle(0, 0, 74, 102);
cr->fill();
Dial(cr,true, 7,4,state->pan,DIAL_MODE_PAN); // pan
Mute(cr, 9 , 41 , state->ID, state->mute ); // mute button
Solo(cr, 9 , 68 , state->ID, state->solo ); // solo button
Rec (cr, 9 , 85 , state->ID, state->recEnable); // rec button
Fader(cr,46 , 4 , state->volume, state->rms, state->falloff ); // fader
if ( state->selected )
{
cr->rectangle(0, -10, 74, 200);
setColour( cr, COLOUR_PURPLE_1 );
cr->set_line_width(1);
cr->stroke();
}
}
return true;
}
void Mediator::redraw()
{
Glib::RefPtr<Gdk::Window> Window = mref_DrawingArea.get_window();
if (Window)
{
Window->clear();
if (!m_Layers.empty())
{
Cairo::RefPtr<Cairo::Context> Context = Window->create_cairo_context();
Gtk::Allocation allocation = mref_DrawingArea.get_allocation();
const int width = allocation.get_width();
const int height = allocation.get_height();
Context->rectangle(0, 0, width, height);
Context->clip();
Context->set_antialias(Cairo::ANTIALIAS_SUBPIXEL);
Context->scale(mref_DrawingArea.getScale(), -mref_DrawingArea.getScale());
Context->translate(-mref_DrawingArea.getXTranslate(),
-mref_DrawingArea.getYTranslate());
std::vector<Layer*>::reverse_iterator rit;
for (rit = m_Layers.rbegin(); rit < m_Layers.rend(); ++rit)
{
if ((*rit)->getIsDisplay())
{
(*rit)->initialiseLayerContext(Context, mref_DrawingArea.getScale());
if ((*rit)->getClassName() == m_SelectedClassName)
{
(*rit)->draw(Context, mref_DrawingArea.getScale(),
m_SelectedUnitIds, (*rit)->getDisplayID());
}
else
{
std::set<int> tempVoidVector;
(*rit)->draw(Context, mref_DrawingArea.getScale(), tempVoidVector,
(*rit)->getDisplayID());
}
}
}
}
}
}
void CardWidget::Draw(Cairo::RefPtr<Cairo::Context> cr, int x, int y)
{
bool highlight = highlightOnHover && isMouseInArea;
Cairo::RefPtr<Cairo::ImageSurface> image = PrefSlots::getImagesStorage().GetCardImage(card);
cr->save();
cr->translate(x, y);
cr->scale(1.0 * width / image->get_width(), 1.0 * height / image->get_height());
cr->rectangle(0, 0, image->get_width(), image->get_height());
cr->clip();
if( highlight ) {
cr->save();
cr->set_source_rgb(0.1, 0.8, 0.1);
cr->paint();
cr->restore();
}
cr->set_source(image, 0, 0);
cr->paint_with_alpha( highlight ? 0.7 : 1.0 );
cr->restore();
}
bool level_editor::tileset_display::on_expose_event(GdkEventExpose* event) {
Glib::RefPtr<Gdk::Window> window = get_window();
if (!window || !m_surface)
return true;
Cairo::RefPtr<Cairo::Context> cr = window->create_cairo_context();
cr->rectangle(event->area.x, event->area.y, event->area.width, event->area.height);
cr->clip();
cr->set_source(m_surface, 0, 0);
cr->paint();
// Show selection rectangle when we are selecting
if (m_selecting
|| ((m_select_x != m_select_end_x || m_select_y != m_select_end_y)
&& m_preferences.sticky_tile_selection)) {
const int x = std::min(m_select_x, m_select_end_x) * m_tile_width;
const int y = std::min(m_select_y, m_select_end_y) * m_tile_height;
const int w = (std::abs(m_select_x - m_select_end_x))
* m_tile_width;
const int h = (std::abs(m_select_y - m_select_end_y))
* m_tile_height;
cr->save();
cr->rectangle(x, y, w, h);
// TODO: move selection color somewhere else (preferences?)
cr->set_source_rgb(0.7, 1, 1);
if (m_preferences.selection_background) {
cr->stroke_preserve();
cr->set_source_rgba(0.7, 1, 0, 0.2);
cr->fill();
} else {
cr->stroke();
}
cr->restore();
}
return true;
}
void ImageWidget::redrawWithoutChanges(Cairo::RefPtr<Cairo::Context> cairo, unsigned width, unsigned height)
{
if(_isInitialized) {
cairo->set_source_rgb(1.0, 1.0, 1.0);
cairo->set_line_width(1.0);
cairo->rectangle(0, 0, width, height);
cairo->fill();
int
destWidth = width - (int) floor(_leftBorderSize + _rightBorderSize),
destHeight = height - (int) floor(_topBorderSize + _bottomBorderSize),
sourceWidth = _imageSurface->get_width(),
sourceHeight = _imageSurface->get_height();
cairo->save();
cairo->translate((int) round(_leftBorderSize), (int) round(_topBorderSize));
cairo->scale((double) destWidth / (double) sourceWidth, (double) destHeight / (double) sourceHeight);
Cairo::RefPtr<Cairo::SurfacePattern> pattern = Cairo::SurfacePattern::create(_imageSurface);
pattern->set_filter(_cairoFilter);
cairo->set_source(pattern);
cairo->rectangle(0, 0, sourceWidth, sourceHeight);
cairo->clip();
cairo->paint();
cairo->restore();
cairo->set_source_rgb(0.0, 0.0, 0.0);
cairo->rectangle(round(_leftBorderSize), round(_topBorderSize), destWidth, destHeight);
cairo->stroke();
if(_showColorScale)
_colorScale->Draw(cairo);
if(_showXYAxes)
{
_vertScale->Draw(cairo);
_horiScale->Draw(cairo);
}
if(_plotTitle != 0)
_plotTitle->Draw(cairo);
}
}
void
FourdThumbnailer::receive_frame(Cairo::RefPtr<Cairo::ImageSurface> img, gint64 pos)
{
if (!m_buffer)
{
m_buffer = Cairo::ImageSurface::create(Cairo::FORMAT_RGB24,
img->get_width() * 10,
img->get_height());
}
Cairo::RefPtr<Cairo::Context> cr = Cairo::Context::create(m_buffer);
int slice_width = m_buffer->get_width() / m_slices;
cr->rectangle((slice_width * m_count), 0,
slice_width, m_buffer->get_height());
cr->clip();
cr->begin_new_path();
cr->set_source(img, m_count * (m_buffer->get_width() - img->get_width()) / (m_slices-1), 0);
cr->paint();
m_count += 1;
}
bool area___::expose_evt__(GdkEventExpose* event){
if(code_.size()>0){
Glib::RefPtr<Gdk::Window> window=da_->get_window();
if(window){
cr_ = window->create_cairo_context();
if(event){
cr_->rectangle(event->area.x, event->area.y,
event->area.width, event->area.height);
cr_->clip();
}
#ifdef debug_
test__();
#else
char buf[32];
l2s__((long)this,buf);
d_(sh_,on_,code_.c_str(),NULL,3,ht_->name__(),"重绘",buf);
#endif
}
return true;
}
return false;
}
bool GMasterReturn::on_expose_event(GdkEventExpose* event)
{
// This is where we draw on the window
Glib::RefPtr<Gdk::Window> window = get_window();
if(window) // Only run if Window does exist
{
// clip to the area indicated by the expose event so that we only redraw
// the portion of the window that needs to be redrawn
Cairo::RefPtr<Cairo::Context> cr = window->create_cairo_context();
cr->rectangle(event->area.x, event->area.y,
event->area.width, event->area.height);
cr->clip();
cr->rectangle(event->area.x, event->area.y,
event->area.width, event->area.height);
cr->set_source_rgb(0.1 , 0.1 , 0.1 );
cr->fill();
Dial(cr, true, 35 , 0, value, DIAL_MODE_SEND ); // fader
// Dial text "A"
cr->select_font_face ("Impact" , Cairo::FONT_SLANT_NORMAL, Cairo::FONT_WEIGHT_BOLD);
cr->set_font_size ( 20 );
cr->move_to ( 10, 28);
switch ( ID )
{
case 0: setColour(cr, COLOUR_BLUE_1 ); cr->show_text ( "A" ); break;
case 1: setColour(cr, COLOUR_BLUE_1 ); cr->show_text ( "B" ); break;
case 2: setColour(cr, COLOUR_BLUE_1 ); cr->show_text ( "C" ); break;
}
}
return true;
}
bool Plotter::on_expose_event(GdkEventExpose* event)
{
// This is where we draw on the window
Glib::RefPtr<Gdk::Window> window = get_window();
if(window)
{
Gtk::Allocation allocation = get_allocation();
const int width = allocation.get_width();
const int height = allocation.get_height();
// coordinates for the center of the window
int xc, yc;
xc = width / 2;
yc = height / 2;
Cairo::RefPtr<Cairo::Context> cr = window->create_cairo_context();
// clip to the area indicated by the expose event so that we only redraw
// the portion of the window that needs to be redrawn
cr->rectangle(event->area.x, event->area.y,
event->area.width, event->area.height);
cr->clip();
//draw curve
cr->set_line_width(1.0);
float zoom = adjustmentmap["zoom"]->GetValue();
float camber = adjustmentmap["camber"]->GetValue();
float load = adjustmentmap["load"]->GetValue();
zoom = (1.0-zoom)*4.0+0.1;
load = load * 0.001;
if (UpdateTire())
{
{
//draw lateral line
cr->set_source_rgb(1.0, 0.0, 0.0);
float x0 = -zoom*0.5*20.0;
float xn = zoom*0.5*20.0;
float ymin = -1000.0;
float ymax = 1000.0;
int points = 500;
for (float x = x0; x <= xn; x += (xn-x0)/points)
{
float maxforce;
float yval = tire.Pacejka_Fy(x, load, camber, 1.0, maxforce)/load;
float xval = width*(x-x0)/(xn-x0);
yval /= ymax-ymin;
yval = (yval+1.0)*0.5;
yval = 1.0 - yval;
yval *= height;
if (x == x0)
cr->move_to(xval, yval);
else
cr->line_to(xval, yval);
//std::cout << xval << ", " << yval << std::endl;
}
cr->stroke();
}
{
//draw longitudinal line
cr->set_source_rgb(0.0, 1.0, 0.0);
float x0 = -zoom*0.5;
float xn = zoom*0.5;
float ymin = -1000.0;
float ymax = 1000.0;
int points = 500;
for (float x = x0; x <= xn; x += (xn-x0)/points)
{
float maxforce;
float yval = tire.Pacejka_Fx(x, load, 1.0, maxforce)/load;
float xval = width*(x-x0)/(xn-x0);
yval /= ymax-ymin;
yval = (yval+1.0)*0.5;
yval = 1.0 - yval;
yval *= height;
if (x == x0)
cr->move_to(xval, yval);
else
cr->line_to(xval, yval);
//std::cout << xval << ", " << yval << std::endl;
}
cr->stroke();
}
{
//draw aligning line
cr->set_source_rgb(0.0, 0.0, 1.0);
float x0 = -zoom*0.5*10.0;
float xn = zoom*0.5*10.0;
float ymin = -60.0;
float ymax = 60.0;
int points = 500;
for (float x = x0; x <= xn; x += (xn-x0)/points)
{
float maxforce;
float yval = tire.Pacejka_Mz(0, x, load, camber*(180.0/3.141593), 1.0, maxforce)/load;
float xval = width*(x-x0)/(xn-x0);
yval /= ymax-ymin;
yval = (yval+1.0)*0.5;
yval = 1.0 - yval;
yval *= height;
if (x == x0)
cr->move_to(xval, yval);
else
cr->line_to(xval, yval);
//std::cout << xval << ", " << yval << std::endl;
}
cr->stroke();
}
// draw grid lines
cr->set_line_width(1.0);
cr->set_source_rgb(0.0, 0.0, 0.0);
cr->move_to(xc, 0);
cr->line_to(xc, yc*2);
cr->move_to(0, yc);
cr->line_to(xc*2, yc);
cr->stroke();
}
}
return true;
}
bool CPagePreview::on_expose_event(GdkEventExpose *event)
{
std::cout << "Fired!\n";
Glib::RefPtr<Gdk::Window> window = get_window();
if(window)
{
// get the cairo context amd allocation
Cairo::RefPtr<Cairo::Context> cr = window->create_cairo_context();
Gtk::Allocation allocation = get_allocation();
const int width = allocation.get_width();
const int height = allocation.get_height();
// coordinates for the center of the window
int xc, yc;
xc = width / 2;
yc = height / 2;
// clip to the area indicated by the expose event so that we only redraw
// the portion of the window that needs to be redrawn
cr->rectangle(event->area.x, event->area.y,
event->area.width, event->area.height);
cr->clip();
double border = 0.05;
double offset = 2.0;
// draw a neat shadow
cr->set_source_rgba(0.0,0.0,0.0,0.4);
cr->begin_new_path();
cr->move_to( width*border+offset,height*border+offset );
cr->line_to( width*(1.0-border)+offset,height*border+offset );
cr->line_to( width*(1.0-border)+offset,height*(1.0-border)+offset );
cr->line_to( width*border+offset,height*(1.0-border)+offset );
cr->close_path();
cr->fill();
// draw the page outline
cr->set_source_rgb(0.0,0.0,0.0); // black
cr->set_line_width( 1.0 );
cr->begin_new_sub_path();
cr->move_to( width*border-offset,height*border-offset );
cr->line_to( width*(1.0-border)-offset,height*border-offset );
cr->line_to( width*(1.0-border)-offset,height*(1.0-border)-offset );
cr->line_to( width*border-offset,height*(1.0-border)-offset );
cr->close_path();
cr->stroke_preserve();
// fill the page with white
cr->save();
cr->set_source_rgb(1.0,1.0,1.0); // white
cr->fill_preserve();
cr->restore();
// and the image preview
ImagePixbuf->render_to_drawable( get_window(),
get_style()->get_black_gc(),
0,
0,
(width-ImagePixbuf->get_width())/2,
(height-ImagePixbuf->get_height())/2,
ImagePixbuf->get_width(), //image->get_width(),
ImagePixbuf->get_height(), //image->get_height(),
Gdk::RGB_DITHER_NONE,0,0 ); // */
return true;
}
}
/** Expose event handler.
* @param event event info structure.
* @return signal return value
*/
bool
LaserDrawingArea::on_expose_event(GdkEventExpose* event)
#endif
{
// This is where we draw on the window
Glib::RefPtr<Gdk::Window> window = get_window();
if(window) {
Gtk::Allocation allocation = get_allocation();
if(__first_draw)
{
__first_draw = false;
const int width = allocation.get_width();
const int height = allocation.get_height();
// coordinates for the center of the window
__xc = width / 2;
__yc = height / 2;
}
#if GTK_VERSION_LT(3,0)
Cairo::RefPtr<Cairo::Context> cr = window->create_cairo_context();
#endif
cr->set_line_width(1.0);
cr->set_source_rgb(1, 1, 1);
#if GTK_VERSION_LT(3,0)
// clip to the area indicated by the expose event so that we only
// redraw the portion of the window that needs to be redrawn
cr->rectangle(event->area.x, event->area.y,
event->area.width, event->area.height);
cr->fill_preserve();
cr->clip();
#else
cr->paint();
#endif
cr->set_source_rgb(0, 0, 0);
//cr->set_source_rgba(0,0,0,1);
// __last_xc += __translation_x;
// __last_yc += __translation_y;
cr->translate(__xc, __yc);
cr->save();
if (! __connected) {
Cairo::TextExtents te;
std::string t = "Not connected to BlackBoard";
cr->set_source_rgb(1, 0, 0);
cr->set_font_size(20);
cr->get_text_extents(t, te);
cr->move_to(- te.width / 2, -te.height / 2);
cr->show_text(t);
} else if ( __laser_ifs.empty() ) {
Cairo::TextExtents te;
std::string t = "No interface opened";
cr->set_source_rgb(1, 0, 0);
cr->set_font_size(20);
cr->get_text_extents(t, te);
cr->move_to(- te.width / 2, -te.height / 2);
cr->show_text(t);
} else if (! all_laser_ifs_have_writer() ) {
Cairo::TextExtents te;
std::string t = "No writer for ";
for (std::list<InterfaceColorPair>::const_iterator it = __laser_ifs.begin();
it != __laser_ifs.end(); ++it) {
fawkes::Interface* itf = it->first;
if (!itf->has_writer()) {
t += itf->uid();
t += ' ';
}
}
cr->set_source_rgb(1, 0, 0);
cr->set_font_size(20);
cr->get_text_extents(t, te);
cr->move_to(- te.width / 2, -te.height / 2);
cr->show_text(t);
} else {
if (! __break_drawing) {
for (std::list<InterfaceColorPair>::const_iterator it = __laser_ifs.begin();
it != __laser_ifs.end(); ++it) {
fawkes::Interface* laser_if = it->first;
laser_if->read();
}
}
for (std::list<InterfaceColorPair>::const_iterator it = __laser_ifs.begin();
it != __laser_ifs.end(); ++it) {
const fawkes::Interface* laser_if = it->first;
const Color& color = it->second;
cr->save();
cr->set_source_rgb(color.r, color.g, color.b);
draw_beams(laser_if, window, cr);
cr->restore();
}
if (__robot_drawer) __robot_drawer->draw_robot(window, cr);
for (std::list<InterfaceColorPair>::const_iterator it = __laser_ifs.begin();
it != __laser_ifs.end(); ++it) {
const fawkes::Interface* laser_if = it->first;
const Color& color = it->second;
cr->save();
cr->set_source_rgb(color.r, color.g, color.b);
draw_segments(laser_if, window, cr);
cr->restore();
}
draw_persons_legs(window, cr);
if(__switch_if != NULL && __switch_if->has_writer()){
SwitchInterface::EnableSwitchMessage *esm = new SwitchInterface::EnableSwitchMessage();
__switch_if->msgq_enqueue(esm);
}
}
cr->restore();
cr->save();
cr->rotate(0.5 * M_PI + __rotation);
cr->scale(-__zoom_factor, __zoom_factor);
cr->set_line_width(1. / __zoom_factor);
if (__visdisp_if) {
__visdisp->process_messages();
__visdisp->draw(cr);
}
const float radius = 0.01;
if (__line_if) {
__line_if->read();
if (__line_if->has_writer() &&
__line_if->is_valid() && __line_if->is_visible()) {
cr->set_source_rgb(1, 0, 0);
/*
std::vector<double> dashes(1);
dashes[0] = 0.1;
cr->set_dash(dashes, 0);
*/
cr->rectangle(__line_if->world_x() - radius * 0.5, __line_if->world_y() - radius * 0.5, radius, radius);
cr->rectangle(__line_if->relative_x() - radius * 0.5, __line_if->relative_y() - radius * 0.5, radius, radius);
cr->fill_preserve();
cr->stroke();
cr->move_to(__line_if->world_x(), __line_if->world_y());
cr->line_to(__line_if->relative_x(), __line_if->relative_y());
cr->stroke();
}
}
cr->restore();
}
return true;
}
void
ViewDrawingArea::draw_buffer()
{
#ifdef DEBUG
std::cerr << "VA->val:"<<_vadj->get_value() <<" VA->upper:"<<_vadj->get_upper() << std::endl << std::flush;
#endif
Feed *feed = AppContext::get().get_feed();
if (feed == NULL)
return;
if (AppContext::get().get_display_type() == FULL)
{
render_full_article();
return;
}
// Dimensions of drawing area
Gtk::Allocation allocation = get_allocation();
const int width = allocation.get_width();
const int height = allocation.get_height();
// First determine start item
Cairo::RefPtr<Cairo::Context> cr = _pixmap->create_cairo_context();
#ifdef DEBUG
/// This code was meant to investigate the 500ms delay with pango
/// at start of rendering.
if (!_layout_prepared)
{
Glib::Timer sw;
sw.start();
Glib::RefPtr<Pango::Layout> pl = Pango::Layout::create (cr);
const char *fonts[] = {"Sans 10", "Sans 14"};
for (unsigned i = 0; i < sizeof(fonts)/sizeof(const char*); ++i)
{
Pango::FontDescription fdesc (fonts[i]);
pl->set_font_description (fdesc);
pl->set_width (10 * Pango::SCALE); // force line break
pl->set_markup ("<b>Show Us Your Freaky Geek Costumes</b>\nHitting the streets in a scary, tech-themed outfit this Halloween? We want to see it. Find out how your Sergey Brin costume (or is it David Duchovny?) could be featured on Wired News. test\n test");
Pango::Rectangle irect, lrect;
pl->get_extents (irect, lrect);
}
_layout_prepared = true;
sw.stop();
unsigned long l;
sw.elapsed(l);
std::cerr << "Time spent rendering: " << l << " us" << std::endl << std::flush;
}
#endif
const item_list_t items = feed->get_items();
item_list_t::const_iterator start_item;
const int n_items = items.size();
double y = 0.0;
if (n_items == 0)
start_item = items.end();
else
{
// Set start_item and h
int start = static_cast<int> (_vadj->get_value());
double h = 0.0;
if (_vadj->get_value() > 0 && _vadj->get_value() == _vadj->get_upper())
{
// This will give a blank page when pulling the handle
// full down. While unusual, it might make sense with
// an ever-growing newslist.
y = 0.0;
start_item = items.end();
}
else
{
start_item = items.begin();
for (int i = 0; i < start; ++i)
++start_item;
if (start < 0)
start = 0;
double prop = _vadj->get_value() - start;
if (prop > 0.0)
{
(*start_item)->make_display_unit();
ItemDisplayUnit *du = (*start_item)->get_display_unit();
du->layout (cr);
h = du->get_height();
}
y = - h * prop;
#ifdef DEBUG
std::cerr << "prop:"<<prop <<" y:"<<y << std::endl << std::flush;
#endif
}
}
// clip to the area indicated by the expose event so that we only redraw
// the portion of the window that needs to be redrawn
cr->reset_clip();
cr->rectangle (0.0, 0.0, width, height);
cr->clip();
// Black on white
cr->set_source_rgb (1.0, 1.0, 1.0);
cr->paint();
cr->set_source_rgb (0.0, 0.0, 0.0);
// Render text
item_list_t::const_iterator it = start_item;
_top_item = *start_item;
_topitem_y = y;
int count = 0;
for (; it != items.end() && y < height; ++it, ++count)
{
(*it)->make_display_unit();
ItemDisplayUnit *du = (*it)->get_display_unit();
du->render (cr, 0, y);
y += du->get_height();
}
cr->show_page();
// Scrollbar settings can now be specified
_vadj->set_upper (n_items);
//_vadj->set_page_size (count - 1 + );
_vadj->set_step_increment (1);
_vadj->set_page_increment (count);
_vadj->changed();
}
bool CalibrationArea::on_expose_event(GdkEventExpose *event)
{
// check that screensize did not change
if (display_width != get_width() ||
display_height != get_height()) {
set_display_size(get_width(), get_height());
}
Glib::RefPtr<Gdk::Window> window = get_window();
if (window) {
Cairo::RefPtr<Cairo::Context> cr = window->create_cairo_context();
cr->save();
cr->rectangle(event->area.x, event->area.y, event->area.width, event->area.height);
cr->clip();
// Print the text
cr->set_font_size(font_size);
double text_height = -1;
double text_width = -1;
Cairo::TextExtents extent;
for (int i = 0; i != help_lines; i++) {
cr->get_text_extents(help_text[i], extent);
text_width = std::max(text_width, extent.width);
text_height = std::max(text_height, extent.height);
}
text_height += 2;
double x = (display_width - text_width) / 2;
double y = (display_height - text_height) / 2 - 60;
cr->set_line_width(2);
cr->rectangle(x - 10, y - (help_lines*text_height) - 10,
text_width + 20, (help_lines*text_height) + 20);
// Print help lines
y -= 3;
for (int i = help_lines-1; i != -1; i--) {
cr->get_text_extents(help_text[i], extent);
cr->move_to(x + (text_width-extent.width)/2, y);
cr->show_text(help_text[i]);
y -= text_height;
}
cr->stroke();
// Draw the points
for (int i = 0; i <= calibrator->get_numclicks(); i++) {
// set color: already clicked or not
if (i < calibrator->get_numclicks())
cr->set_source_rgb(1.0, 1.0, 1.0);
else
cr->set_source_rgb(0.8, 0.0, 0.0);
cr->set_line_width(1);
cr->move_to(X[i] - cross_lines, Y[i]);
cr->rel_line_to(cross_lines*2, 0);
cr->move_to(X[i], Y[i] - cross_lines);
cr->rel_line_to(0, cross_lines*2);
cr->stroke();
cr->arc(X[i], Y[i], cross_circle, 0.0, 2.0 * M_PI);
cr->stroke();
}
// Draw the clock background
cr->arc(display_width/2, display_height/2, clock_radius/2, 0.0, 2.0 * M_PI);
cr->set_source_rgb(0.5, 0.5, 0.5);
cr->fill_preserve();
cr->stroke();
cr->set_line_width(clock_line_width);
cr->arc(display_width/2, display_height/2, (clock_radius - clock_line_width)/2,
3/2.0*M_PI, (3/2.0*M_PI) + ((double)time_elapsed/(double)max_time) * 2*M_PI);
cr->set_source_rgb(0.0, 0.0, 0.0);
cr->stroke();
// Draw the message (if any)
if (message != NULL) {
// Frame the message
cr->set_font_size(font_size);
Cairo::TextExtents extent;
cr->get_text_extents(this->message, extent);
text_width = extent.width;
text_height = extent.height;
x = (display_width - text_width) / 2;
y = (display_height - text_height + clock_radius) / 2 + 60;
cr->set_line_width(2);
cr->rectangle(x - 10, y - text_height - 10,
text_width + 20, text_height + 25);
// Print the message
cr->move_to(x, y);
cr->show_text(this->message);
cr->stroke();
}
cr->restore();
}
return true;
}
bool HistogramDrawingArea::on_expose_event( GdkEventExpose* event )
{
Glib::RefPtr<Gdk::Window> window = get_window();
if( window == NULL)
{
return true;
}
Cairo::RefPtr<Cairo::Context> refCairo = window->create_cairo_context();
// clip to the area indicated by the expose event so that we only redraw
// the portion of the window that needs to be redrawn
refCairo->rectangle(
event->area.x,
event->area.y,
event->area.width,
event->area.height);
refCairo->clip();
// Clear the background
refCairo->set_source_rgb( 255, 255, 255 );
refCairo->paint();
Glib::Mutex::Lock pixBufLock(statsMutex, Glib::NOT_LOCK );
if ( pixBufLock.try_acquire() != true )
{
return true;
}
if ( m_drawMode == Histogram::MODE_HISTOGRAM )
{
for ( int i=0; i < ImageStatistics::NUM_STATISTICS_CHANNELS; i++ )
{
DrawSingleHistogramLine(
refCairo,
static_cast<ImageStatistics::StatisticsChannel>(i) );
}
DrawHistogramGridLabels( refCairo );
}
else if ( m_drawMode == Histogram::MODE_ROWCOL )
{
double red, green, blue;
if ( m_dispOptions.showGrey == true )
{
GetLineColor( ImageStatistics::GREY, red, green, blue );
DrawSingleRowColChannel(
refCairo,
m_rowColStats.grey,
m_rowColStats.numPixelValues,
red,
green,
blue );
}
if ( m_dispOptions.showRed == true )
{
GetLineColor( ImageStatistics::RED, red, green, blue );
DrawSingleRowColChannel(
refCairo,
m_rowColStats.red,
m_rowColStats.numPixelValues,
red,
green,
blue );
}
if ( m_dispOptions.showGreen == true )
{
GetLineColor( ImageStatistics::GREEN, red, green, blue );
DrawSingleRowColChannel(
refCairo,
m_rowColStats.green,
m_rowColStats.numPixelValues,
red,
green,
blue );
}
if ( m_dispOptions.showBlue == true )
{
GetLineColor( ImageStatistics::BLUE, red, green, blue );
DrawSingleRowColChannel(
refCairo,
m_rowColStats.blue,
m_rowColStats.numPixelValues,
red,
green,
blue );
}
DrawRowColGridLabels(
refCairo,
m_rowColStats.numPixelValues,
m_rowColStats.imageDimension );
}
DrawBackgroundGrid( refCairo );
return true;
}
bool Format7DrawingArea::on_expose_event( GdkEventExpose* event )
{
Glib::RefPtr<Gdk::Window> window = get_window();
if( window == NULL)
{
return true;
}
Cairo::RefPtr<Cairo::Context> refCairo = window->create_cairo_context();
// clip to the area indicated by the expose event so that we only redraw
// the portion of the window that needs to be redrawn
refCairo->rectangle(
event->area.x,
event->area.y,
event->area.width,
event->area.height);
refCairo->clip();
// Get width / height of widget
int width;
int height;
window->get_size( width, height );
// Figure out which scale to use (horizontal or vertical)
const float horzScale = m_maxWidth / (float)width;
const float vertScale = m_maxHeight / (float)height;
m_previewScale = (horzScale < vertScale) ? vertScale : horzScale;
Gtk::AspectFrame* pFrame = (Gtk::AspectFrame*)get_parent();
float fRatio = m_maxWidth / (float)m_maxHeight;
if ( fRatio != pFrame->property_ratio())
{
pFrame->set( 0.0, 0.0, fRatio, false );
}
unsigned int scaledLeft = static_cast<unsigned int>(ToScaled( m_left ));
unsigned int scaledTop = static_cast<unsigned int>(ToScaled( m_top ));
unsigned int scaledWidth = static_cast<unsigned int>(ToScaled( m_width ));
unsigned int scaledHeight = static_cast<unsigned int>(ToScaled( m_height ));
// Fill the background with the PGR color
FillBackground(
refCairo,
event->area.x,
event->area.y,
event->area.width,
event->area.height);
// Draw the data on top of the filled background
DrawRectangle( refCairo, scaledLeft, scaledTop, scaledWidth, scaledHeight );
DrawDashedLines( refCairo, scaledLeft, scaledTop, scaledWidth, scaledHeight );
DrawImageDimensionsText( refCairo, m_left, m_top, m_width, m_height );
DrawCurrentCursorPositionText( refCairo, m_currX, m_currY );
if ( m_imageSizeChanged == true )
{
if ( m_left != m_lastFiredLeft ||
m_top != m_lastFiredTop ||
m_width != m_lastFiredWidth ||
m_height != m_lastFiredHeight )
{
m_signal_image_size_changed( m_left, m_top, m_width, m_height );
m_lastFiredLeft = m_left;
m_lastFiredTop = m_top;
m_lastFiredWidth = m_width;
m_lastFiredHeight = m_height;
}
m_imageSizeChanged = false;
}
return true;
}
void area___::test__(){
int width, height;
width=da_->get_allocation().get_width();
height=da_->get_allocation().get_height();
double m_radius=0.42;
double m_line_width=0.05;
// scale to unit square and translate (0, 0) to be (0.5, 0.5), i.e.
// the center of the window
cr_->scale(width, height);
cr_->translate(0.5, 0.5);
cr_->set_line_width(m_line_width);
cr_->save();
cr_->set_source_rgba(0.337, 0.612, 0.117, 0.9); // green
cr_->paint();
cr_->restore();
cr_->arc(0, 0, m_radius, 0, 2 * M_PI);
cr_->save();
cr_->set_source_rgba(1.0, 1.0, 1.0, 0.8);
cr_->fill_preserve();
cr_->restore();
cr_->stroke_preserve();
cr_->clip();
//clock ticks
for (int i = 0; i < 12; i++)
{
double inset = 0.05;
cr_->save();
cr_->set_line_cap(Cairo::LINE_CAP_ROUND);
if(i % 3 != 0)
{
inset *= 0.8;
cr_->set_line_width(0.03);
}
cr_->move_to(
(m_radius - inset) * cos (i * M_PI / 6),
(m_radius - inset) * sin (i * M_PI / 6));
cr_->line_to (
m_radius * cos (i * M_PI / 6),
m_radius * sin (i * M_PI / 6));
cr_->stroke();
cr_->restore(); // stack-pen-size
}
// store the current time
time_t rawtime;
time(&rawtime);
struct tm * timeinfo = localtime (&rawtime);
// compute the angles of the indicators of our clock
double minutes = timeinfo->tm_min * M_PI / 30;
double hours = timeinfo->tm_hour * M_PI / 6;
double seconds= timeinfo->tm_sec * M_PI / 30;
cout<<timeinfo->tm_min<<","<<timeinfo->tm_hour<<","<<timeinfo->tm_sec<<endl;
cr_->save();
cr_->set_line_cap(Cairo::LINE_CAP_ROUND);
// draw the seconds hand
cr_->save();
cr_->set_line_width(m_line_width / 3);
cr_->set_source_rgba(0.7, 0.7, 0.7, 0.8); // gray
cr_->move_to(0, 0);
cr_->line_to(sin(seconds) * (m_radius * 0.9),
-cos(seconds) * (m_radius * 0.9));
cr_->stroke();
cr_->restore();
// draw the minutes hand
cr_->set_source_rgba(0.117, 0.337, 0.612, 0.9); // blue
cr_->move_to(0, 0);
cr_->line_to(sin(minutes + seconds / 60) * (m_radius * 0.8),
-cos(minutes + seconds / 60) * (m_radius * 0.8));
cr_->stroke();
// draw the hours hand
cr_->set_source_rgba(0.337, 0.612, 0.117, 0.9); // green
cr_->move_to(0, 0);
cr_->line_to(sin(hours + minutes / 12.0) * (m_radius * 0.5),
-cos(hours + minutes / 12.0) * (m_radius * 0.5));
cr_->stroke();
cr_->restore();
// draw a little dot in the middle
cr_->arc(0, 0, m_line_width / 3.0, 0, 2 * M_PI);
cr_->fill();
}