338 lines
10 KiB
C++
338 lines
10 KiB
C++
/*
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* This file is part of RawTherapee.
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*
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* Copyright (c) 2004-2010 Gabor Horvath <hgabor@rawtherapee.com>
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*
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* RawTherapee 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 3 of the License, or
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* (at your option) any later version.
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*
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* RawTherapee 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
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* along with RawTherapee. If not, see <https://www.gnu.org/licenses/>.
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*/
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#include <iomanip>
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#include "shcselector.h"
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#include "multilangmgr.h"
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#include "mycurve.h"
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#include "rtscalable.h"
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SHCSelector::SHCSelector() : movingPosition(-1), tmpX(0.0), tmpPos(0.0), wslider(0.0), cl(nullptr), coloredBar(RTO_Left2Right)
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{
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positions[0] = defaults[0] = 0.25;
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positions[1] = defaults[1] = 0.5;
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positions[2] = defaults[2] = 0.75;
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leftMargin = static_cast<int>(RTScalable::scalePixelSize(RADIUS - 1.5));
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rightMargin = static_cast<int>(RTScalable::scalePixelSize(RADIUS - 1.5));
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Glib::RefPtr<Gtk::StyleContext> style = get_style_context();
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style->add_class("drawingarea");
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style->add_class(GTK_STYLE_CLASS_TROUGH);
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//style->add_class(GTK_STYLE_CLASS_SCALE);
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//style->add_class(GTK_STYLE_CLASS_SLIDER);
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// TODO: This is a hack :) ; change this name to a specific one and create a new entry in all CSS theme files
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set_name("ThresholdSelector");
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set_can_focus(false);
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set_tooltip_text(M("SHCSELECTOR_TOOLTIP"));
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}
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Gtk::SizeRequestMode SHCSelector::get_request_mode_vfunc () const
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{
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return Gtk::SIZE_REQUEST_CONSTANT_SIZE;
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}
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void SHCSelector::get_preferred_height_vfunc (int &minimum_height, int &natural_height) const
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{
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int minimumWidth = 0;
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int naturalWidth = 0;
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get_preferred_width_vfunc (minimumWidth, naturalWidth);
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get_preferred_height_for_width_vfunc (minimumWidth, minimum_height, natural_height);
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}
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void SHCSelector::get_preferred_width_vfunc (int &minimum_width, int &natural_width) const
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{
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minimum_width = RTScalable::scalePixelSize(100);
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natural_width = RTScalable::scalePixelSize(150);
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}
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void SHCSelector::get_preferred_height_for_width_vfunc (int width, int &minimum_height, int &natural_height) const
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{
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natural_height = minimum_height = RTScalable::scalePixelSize(14);
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}
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void SHCSelector::get_preferred_width_for_height_vfunc (int height, int &minimum_width, int &natural_width) const
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{
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get_preferred_width_vfunc (minimum_width, natural_width);
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}
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void SHCSelector::setMargins(int left, int right)
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{
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leftMargin = left;
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rightMargin = right;
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}
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void SHCSelector::setDefaults (double spos, double cpos, double hpos)
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{
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defaults[0] = spos;
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defaults[1] = cpos;
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defaults[2] = hpos;
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}
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void SHCSelector::setPositions (double spos, double cpos, double hpos)
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{
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positions[0] = spos;
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positions[1] = cpos;
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positions[2] = hpos;
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queue_draw ();
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}
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void SHCSelector::getPositions (double& spos, double& cpos, double& hpos)
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{
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spos = positions[0];
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cpos = positions[1];
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hpos = positions[2];
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}
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void SHCSelector::on_realize()
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{
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Gtk::DrawingArea::on_realize();
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add_events(Gdk::POINTER_MOTION_MASK | Gdk::BUTTON_PRESS_MASK | Gdk::BUTTON_RELEASE_MASK);
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}
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void SHCSelector::updateDrawingArea (const ::Cairo::RefPtr< Cairo::Context> &cr)
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{
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if (!get_realized() || !get_width() || !get_height()) {
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return;
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}
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Glib::RefPtr<Gtk::StyleContext> style = get_style_context();
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// Setup drawing
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cr->set_operator (Cairo::OPERATOR_OVER);
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// Get drawing area size
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const int w = get_width () - leftMargin - rightMargin;
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const int h = get_height ();
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// Compute slider parameters
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wslider = static_cast<double>(std::max(h / 5, 10));
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const double hwslider = wslider / 2.;
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// Set the box's colors
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cr->set_line_width (1.0);
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cr->set_antialias(Cairo::ANTIALIAS_SUBPIXEL);
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cr->set_line_cap(Cairo::LINE_CAP_BUTT);
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int coloredBarHeight = static_cast<int>(static_cast<double>(h) * 5.5 / 7. + 0.5);
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if (is_sensitive() && coloredBar.canGetColors()) {
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// Gradient background
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coloredBar.setColoredBarSize(leftMargin + 1, 1, w - 2, coloredBarHeight - 2);
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coloredBar.updateColoredBar(cr);
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} else {
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// Style background
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style->render_background(cr, leftMargin + 1, 1, w - 2, coloredBarHeight - 2);
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}
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// Draw the box's borders
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style->render_frame(cr, leftMargin, 0, w, coloredBarHeight);
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// Draw sliders
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for (int i = 0; i < 3; i++) {
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if (i == movingPosition) {
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style->set_state(Gtk::STATE_FLAG_ACTIVE);
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}
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else if (!is_sensitive()) {
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style->set_state(Gtk::STATE_FLAG_INSENSITIVE);
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} else {
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style->set_state(Gtk::STATE_FLAG_NORMAL);
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}
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style->render_slider(cr,
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static_cast<double>(leftMargin) + 1. + (static_cast<double>(w) - 2.) * positions[i] - static_cast<double>(hwslider),
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static_cast<double>(vb),
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wslider,
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static_cast<double>(h) - static_cast<double>(vb),
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Gtk::ORIENTATION_VERTICAL);
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style->set_state(Gtk::STATE_FLAG_NORMAL);
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}
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// Draw text for the slider that is being moved
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if (movingPosition >= 0) {
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int i = movingPosition;
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int offset;
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int layout_width = 0, layout_height = 0;
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Glib::RefPtr<Pango::Context> context = get_pango_context () ;
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Pango::FontDescription fontd(get_style_context()->get_font());
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// Update font
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fontd.set_weight (Pango::WEIGHT_NORMAL);
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const double fontSize = static_cast<double>(h) * 0.8; // pt
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// Converting font size to "px" based on DPI and scale
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#ifndef __APPLE__
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const double fontScale = RTScalable::getDPI() / RTScalable::pangoDPI; // Refer to notes in rtscalable.h
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#else
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// On MacOS, font is already scaled by the System library
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// Refer to https://gitlab.gnome.org/GNOME/gtk/-/blob/gtk-3-24/gdk/quartz/gdkscreen-quartz.c
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const double fontScale = 1.;
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#endif
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const double absoluteFontSize = static_cast<double>(fontSize) * fontScale; // px
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// Absolute size is defined in "Pango units" and shall be multiplied by
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// Pango::SCALE from "px":
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fontd.set_absolute_size (absoluteFontSize * static_cast<double>(Pango::SCALE));
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context->set_font_description (fontd);
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Glib::RefPtr<Pango::Layout> layout = create_pango_layout(Glib::ustring::format(std::setprecision(2), positions[i]));
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layout->get_pixel_size(layout_width, layout_height);
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offset = positions[i] > 0.5 ? -layout_width - 1 - hwslider : 1 + hwslider;
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cr->set_source_rgb (0., 0., 0.);
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cr->set_line_width(3.);
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cr->set_line_join(Cairo::LINE_JOIN_ROUND);
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cr->set_line_cap(Cairo::LINE_CAP_ROUND);
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cr->move_to (static_cast<double>(leftMargin) + static_cast<double>(w) * positions[i] + static_cast<double>(offset), 0.);
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layout->add_to_cairo_context (cr);
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cr->stroke_preserve();
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cr->set_line_width(0.5);
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cr->set_source_rgb (1., 1., 1.);
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cr->fill ();
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}
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}
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bool SHCSelector::on_draw(const ::Cairo::RefPtr< Cairo::Context> &cr)
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{
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// Draw drawing area
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// Note: As drawing area surface is updated inside on_draw function, hidpi is automatically supported
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updateDrawingArea(cr);
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return true;
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}
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bool SHCSelector::on_button_press_event (GdkEventButton* event)
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{
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// check if a slider is under the cursor
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const double w = static_cast<double>(get_width () - leftMargin - rightMargin);
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movingPosition = -1;
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for (int i = 0; i < 3; i++) {
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const double currPos = static_cast<double>(leftMargin) + 1. + (w - 2.) * positions[i];
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const double hwslider = wslider / 2.;
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if (event->x >= currPos - hwslider && event->x <= currPos + hwslider) {
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movingPosition = i;
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tmpX = event->x;
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tmpPos = positions[i];
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break;
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}
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}
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queue_draw ();
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return true;
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}
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bool SHCSelector::on_button_release_event (GdkEventButton* event)
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{
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if (event->button == 1) {
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if (movingPosition >= 0) {
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movingPosition = -1;
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queue_draw ();
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}
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} else if (event->button == 3) {
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if (movingPosition >= 0) {
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movingPosition = -1;
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}
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// right mouse button reset the selector to the stored default values
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if (reset()) {
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// rest has modified the values
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if (cl) {
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cl->shcChanged ();
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}
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}
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}
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return true;
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}
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bool SHCSelector::on_motion_notify_event (GdkEventMotion* event)
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{
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if (movingPosition >= 0) {
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const double innerw = static_cast<double>(get_width () - leftMargin - rightMargin) - 2.;
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positions[movingPosition] = tmpPos + (event->x - tmpX) / innerw;
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if (positions[movingPosition] < 0) {
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positions[movingPosition] = 0.0;
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}
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if (movingPosition > 0 && positions[movingPosition] < positions[movingPosition - 1] + wslider / innerw) {
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positions[movingPosition] = positions[movingPosition - 1] + wslider / innerw;
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}
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if (positions[movingPosition] > 1.0) {
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positions[movingPosition] = 1.0;
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}
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if (movingPosition < 2 && positions[movingPosition] > positions[movingPosition + 1] - wslider / innerw) {
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positions[movingPosition] = positions[movingPosition + 1] - wslider / innerw;
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}
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if (cl) {
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cl->shcChanged ();
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}
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queue_draw ();
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}
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return true;
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}
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void SHCSelector::styleChanged (const Glib::RefPtr<Gtk::StyleContext>& style)
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{
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queue_draw ();
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}
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bool SHCSelector::reset () // : movingPosition(-1), cl(NULL) {
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{
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if ( positions[0] != defaults[0] ||
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positions[1] != defaults[1] ||
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positions[2] != defaults[2]
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) {
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positions[0] = defaults[0];
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positions[1] = defaults[1];
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positions[2] = defaults[2];
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queue_draw ();
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return true;
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}
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return false;
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}
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void SHCSelector::refresh()
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{
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Glib::RefPtr<Gdk::Window> win = get_window();
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if (win) {
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win->invalidate(true);
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}
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}
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