359 lines
9.2 KiB
C++
359 lines
9.2 KiB
C++
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/*
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* Copyright (C) 2020 Robin Gareus <robin@gareus.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include <cassert>
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#include "gtkmm2ext/colors.h"
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#include "gtkmm2ext/utils.h"
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#include "widgets/frame.h"
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#include "widgets/ui_config.h"
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using namespace std;
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using namespace Gtk;
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using namespace ArdourWidgets;
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Frame::Frame (Orientation orientation, bool boxy)
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: _orientation (orientation)
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, _w (0)
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, _current_parent (0)
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, _border (0)
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, _padding (4)
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, _label_pad_w (5)
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, _label_pad_h (2)
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, _label_left (12)
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, _text_width (0)
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, _text_height (0)
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, _alloc_x0 (0)
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, _alloc_y0 (0)
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, _boxy (boxy)
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{
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set_name ("Frame");
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ensure_style ();
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_min_size.width = _min_size.height = 0;
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_layout = Pango::Layout::create (get_pango_context ());
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/* provide bg color for cairo child widgets */
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g_object_set_data (G_OBJECT (gobj ()), "has_cairo_widget_background_info", (void*)0xfeedface);
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UIConfigurationBase::instance().DPIReset.connect (sigc::mem_fun (*this, &Frame::on_name_changed));
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}
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Frame::~Frame ()
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{
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if (_parent_style_change) {
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_parent_style_change.disconnect ();
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}
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if (_w) {
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_w->unparent ();
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}
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}
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void
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Frame::on_add (Widget* w)
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{
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if (_w || !w) {
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return;
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}
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Bin::on_add (w);
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_w = w;
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queue_resize ();
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}
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void
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Frame::on_remove (Gtk::Widget* w)
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{
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Bin::on_remove (w);
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assert (_w == w);
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_w = 0;
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}
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void
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Frame::on_size_request (GtkRequisition* r)
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{
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Bin::on_size_request (r);
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_border = get_border_width ();
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_layout->set_markup (_label_text);
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if (!_layout->get_text ().empty ()) {
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_layout->get_pixel_size (_text_width, _text_height);
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} else {
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_text_width = _text_height = 0;
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}
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if (_w) {
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_w->size_request (*r);
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} else {
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r->width = 0;
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r->height = 0;
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}
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if (_text_width > 0) {
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if (_orientation == Horizontal) {
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r->width = max (r->width, _text_width + _label_pad_w * 2 + _label_left);
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r->width += 2 * (_padding + _border);
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r->height += 2 * (_padding + _border + _label_pad_h) + _text_height;
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} else {
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r->height = max (r->height, _text_width + _label_pad_w * 2 + _label_left);
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r->width += 2 * (_padding + _border + _label_pad_h) + _text_height;
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r->height += 2 * (_padding + _border);
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}
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} else {
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r->height += 2 * (_padding + _border);
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r->width += 2 * (_padding + _border);
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}
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_min_size = *r;
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}
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void
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Frame::on_size_allocate (Allocation& alloc)
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{
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Bin::on_size_allocate (alloc);
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_alloc_x0 = alloc.get_x ();
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_alloc_y0 = alloc.get_y ();
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Allocation child_alloc;
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if (alloc.get_width () < _min_size.width || alloc.get_height () < _min_size.height) {
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#if 0
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printf ("Frame::on_size_allocate %dx%d < %dx%d\n", alloc.get_width (), alloc.get_height (), _min_size.width, _min_size.height);
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#endif
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return;
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}
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int pb_l, pb_t;
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if (_orientation == Horizontal) {
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pb_l = _padding + _border;
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pb_t = _padding + _border + (_text_width > 0 ? _label_pad_h : 0);
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child_alloc.set_x (alloc.get_x () + pb_l);
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child_alloc.set_y (alloc.get_y () + pb_t + _text_height);
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child_alloc.set_width (alloc.get_width () - pb_l * 2);
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child_alloc.set_height (alloc.get_height () - pb_t * 2 - _text_height);
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} else {
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pb_l = _padding + _border + (_text_width > 0 ? _label_pad_h : 0);;
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pb_t = _padding + _border;
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child_alloc.set_x (alloc.get_x () + pb_l + _text_height);
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child_alloc.set_y (alloc.get_y () + pb_t);
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child_alloc.set_width (alloc.get_width () - pb_l * 2 - _text_height);
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child_alloc.set_height (alloc.get_height () - pb_t * 2);
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}
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if (_w) {
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_w->size_allocate (child_alloc);
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}
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}
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void
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Frame::on_style_changed (const Glib::RefPtr<Gtk::Style>& style)
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{
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Bin::on_style_changed (style);
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Glib::RefPtr<Gtk::Style> const& new_style = get_style ();
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if (_layout && (_layout->get_font_description ().gobj () == 0 || _layout->get_font_description () != new_style->get_font ())) {
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_layout->set_font_description (new_style->get_font ());
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queue_resize ();
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} else if (is_realized ()) {
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queue_resize ();
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}
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}
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void
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Frame::on_name_changed ()
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{
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ensure_style ();
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queue_resize ();
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queue_draw ();
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}
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Glib::RefPtr<Style>
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Frame::get_parent_style ()
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{
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Widget* parent = get_parent ();
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while (parent) {
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if (parent->get_has_window ()) {
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break;
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}
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parent = parent->get_parent ();
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}
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if (parent && parent->get_has_window ()) {
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if (_current_parent != parent) {
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if (_parent_style_change) {
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_parent_style_change.disconnect ();
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}
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_current_parent = parent;
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_parent_style_change = parent->signal_style_changed ().connect (mem_fun (*this, &Frame::on_style_changed));
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}
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return parent->get_style ();
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}
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return get_style ();
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}
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bool
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Frame::on_expose_event (GdkEventExpose* ev)
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{
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Glib::RefPtr<Style> pstyle (get_parent_style ());
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Glib::RefPtr<Style> style (get_style ());
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const bool boxy = _boxy | boxy_buttons ();
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const float crad = boxy ? 0 : std::max (2.f, 3.f * UIConfigurationBase::instance ().get_ui_scale ());
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const int lbl = ceil (_text_height / 2.0);
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Gdk::Color pbg = pstyle->get_bg (get_state ());
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Gdk::Color edge = pstyle->get_dark (get_state ());
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Gdk::Color bg = style->get_bg (get_state ());
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Gdk::Color text = style->get_text (get_state ());
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if (_edge_color) {
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edge = _edge_color.value ();
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}
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Cairo::RefPtr<Cairo::Context> cr = get_window ()->create_cairo_context ();
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cr->rectangle (ev->area.x, ev->area.y, ev->area.width, ev->area.height);
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cr->clip_preserve ();
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cr->set_source_rgb (pbg.get_red_p (), pbg.get_green_p (), pbg.get_blue_p ());
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cr->fill ();
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cr->translate (_alloc_x0, _alloc_y0);
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int ll, tp, tw2, th2;
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if (_orientation == Horizontal) {
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ll = _border;
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tp = _border + (_text_width > 0 ? _label_pad_h : 0);
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th2 = lbl;
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tw2 = 0;
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} else {
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ll = _border + (_text_width > 0 ? _label_pad_h : 0);
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tp = _border;
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th2 = 0;
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tw2 = lbl;
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}
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/* Edge */
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assert (_padding >= 2);
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Gtkmm2ext::rounded_rectangle (cr, ll + tw2, tp + th2, get_width () - ll * 2 - tw2, get_height () - tp * 2 - th2, crad + 1.5);
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cr->set_source_rgb (edge.get_red_p (), edge.get_green_p (), edge.get_blue_p ());
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cr->fill ();
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Gtkmm2ext::rounded_rectangle (cr, ll + tw2 + 1, tp + th2 + 1, get_width () - ll * 2 - tw2 - 2, get_height () - tp * 2 - th2 - 2, crad);
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cr->set_source_rgb (bg.get_red_p (), bg.get_green_p (), bg.get_blue_p ());
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cr->fill ();
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if (_text_width > 0) {
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int lft, top;
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static const double degrees = M_PI / 180.0;
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double r = crad + 1.5;
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cr->set_source_rgb (bg.get_red_p (), bg.get_green_p (), bg.get_blue_p ());
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if (_orientation == Horizontal) {
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lft = ll + _padding + _label_left;
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top = _border;
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Gtkmm2ext::rounded_top_rectangle (cr, lft, top, _text_width + 2 * _label_pad_w, _text_height + 2 * _label_pad_h, crad + 1.5);
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cr->fill ();
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double x = lft + .5;
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double y = top + .5;
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double w = _text_width + 2 * _label_pad_w;
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double h = _label_pad_h + th2;
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cr->move_to (x, y + h);
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cr->arc (x + r, y + r, r, 180 * degrees, 270 * degrees); //tl
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cr->arc (x + w - r, y + r, r, -90 * degrees, 0 * degrees); //tr
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cr->line_to (x + w, y + h);
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} else {
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lft = _border;
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top = get_height () - ll - _padding - _label_left - _text_width;
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Gtkmm2ext::rounded_left_half_rectangle (cr, lft, top, _text_height + 2 * _label_pad_h, _text_width + 2 * _label_pad_w, crad + 1.5);
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cr->fill ();
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double x = lft + .5;
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double y = top + .5;
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double w = _label_pad_h + tw2;
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double h = _text_width + 2 * _label_pad_w;
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cr->move_to (x+w, y + h);
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cr->arc (x + r, y + h - r, r, 90 * degrees, 180 * degrees); //bl
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cr->arc (x + r, y + r, r, 180 * degrees, 270 * degrees); //tl
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cr->line_to (x + w, y);
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}
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cr->set_line_width (1);
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cr->set_source_rgb (edge.get_red_p (), edge.get_green_p (), edge.get_blue_p ());
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cr->stroke ();
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cr->save ();
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cr->set_source_rgb (text.get_red_p (), text.get_green_p (), text.get_blue_p ());
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if (_orientation == Horizontal) {
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cr->move_to (lft + _label_pad_w, top + _padding + _label_pad_h - th2 / 2 - 1);
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} else {
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cr->move_to (lft + _padding + _label_pad_h - tw2 / 2 - 1, top + _label_pad_w + _text_width);
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cr->rotate (M_PI / -2.0);
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}
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_layout->update_from_cairo_context (cr);
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_layout->show_in_cairo_context (cr);
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cr->restore ();
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}
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if (_w->is_visible ()) {
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propagate_expose (*_w, ev);
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}
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return true;
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}
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void
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Frame::set_padding (int p)
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{
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if (_padding == p + 2 || p < 0) {
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return;
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}
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_padding = p + 2;
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queue_resize ();
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}
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void
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Frame::reset_edge_color ()
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{
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_edge_color.reset ();
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}
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void
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Frame::set_edge_color (Gtkmm2ext::Color c)
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{
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double r, g, b, a;
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Gdk::Color color;
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Gtkmm2ext::color_to_rgba (c, r, g, b, a);
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color.set_rgb_p (r, g, b);
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if (_edge_color == color) {
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return;
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}
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_edge_color = color;
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queue_draw ();
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}
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void
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Frame::set_label (std::string const& t)
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{
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if (_label_text == t) {
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return;
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}
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_label_text = t;
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queue_resize ();
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}
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