Changes to black compression and saturation controls. Black compression from 0-50 acts the same as 0-100 on the previous version, compressing dark tones without crushing blacks. 50-100 then starts crushing blacks until by 100 on the slider, all tones up to the set black point are sent to zero. In the new saturation control, negative values of the slider set a linear curve rather than an inverted S curve, and smoothly decrease saturation to zero across the board.
This commit is contained in:
Emil Martinec
182
rtgui/shcselector.cc
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182
rtgui/shcselector.cc
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/*
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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 <http://www.gnu.org/licenses/>.
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*/
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#include <shcselector.h>
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#include <iomanip>
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#include <mycurve.h>
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SHCSelector::SHCSelector() : movingPosition(-1), cl(NULL) {
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positions[0] = 0.25;
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positions[1] = 0.5;
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positions[2] = 0.75;
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}
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void SHCSelector::setPositions (double spos, double cpos, double hpos) {
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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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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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Gtk::DrawingArea::on_realize();
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add_events(Gdk::EXPOSURE_MASK | Gdk::POINTER_MOTION_MASK | Gdk::BUTTON_PRESS_MASK | Gdk::BUTTON_RELEASE_MASK);
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}
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bool SHCSelector::on_expose_event(GdkEventExpose* event) {
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Cairo::RefPtr<Cairo::Context> cr = get_window()->create_cairo_context();
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int w = get_width ();
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int h = get_height ();
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wslider = h *2.0 / 5.0;
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Gdk::Color bgc = get_style()->get_bg (Gtk::STATE_NORMAL);
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Gdk::Color fgc = get_style()->get_text (Gtk::STATE_NORMAL);
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// clear bg
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cr->set_source_rgb (bgc.get_red_p(), bgc.get_green_p(), bgc.get_blue_p());
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cr->rectangle (0, 0, w, h);
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cr->fill();
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// draw gradient background
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Cairo::RefPtr< Cairo::LinearGradient > bggradient = Cairo::LinearGradient::create (0, 0, w, 0);
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bggradient->add_color_stop_rgb (0, 0, 0, 0);
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bggradient->add_color_stop_rgb (1, 1, 1, 1);
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cr->set_line_width (1.0);
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cr->set_source (bggradient);
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cr->rectangle (0.5, h*2.0/7.0 + 0.5, w-0.5, h*3.0/7.0-0.5);
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cr->fill_preserve();
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cr->set_source_rgb (fgc.get_red_p(), fgc.get_green_p(), fgc.get_blue_p());
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cr->stroke ();
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// draw sliders
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cr->set_line_width (1.0);
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for (int i=0; i<3; i++) {
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cr->move_to (w*positions[i]-wslider/2+0.5, h-0.5);
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cr->line_to (w*positions[i]-wslider/2+0.5, wslider/2 + 0.5);
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cr->line_to (w*positions[i], 0.5);
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cr->line_to (w*positions[i]+wslider/2-0.5, wslider/2 + 0.5);
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cr->line_to (w*positions[i]+wslider/2-0.5, h-0.5);
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cr->line_to (w*positions[i]-wslider/2+0.5, h-0.5);
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cr->set_source_rgb (bgc.get_red_p(), bgc.get_green_p(), bgc.get_blue_p());
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cr->fill_preserve ();
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cr->set_source_rgb (fgc.get_red_p(), fgc.get_green_p(), fgc.get_blue_p());
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cr->stroke ();
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}
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// draw text for the slider that is being moved
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Glib::RefPtr<Pango::Context> context = get_pango_context () ;
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cr->set_line_width (0.5);
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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, layout_height;
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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-wslider/2 : 1+wslider/2;
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cr->move_to (w*positions[i]+offset-0.5, 0);
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cr->set_source_rgb (bgc.get_red_p(), bgc.get_green_p(), bgc.get_blue_p());
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layout->add_to_cairo_context (cr);
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cr->fill_preserve ();
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cr->stroke ();
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cr->move_to (w*positions[i]+offset+0.5, 1);
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layout->add_to_cairo_context (cr);
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cr->fill_preserve ();
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cr->stroke ();
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cr->set_source_rgb (fgc.get_red_p(), fgc.get_green_p(), fgc.get_blue_p());
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cr->move_to (w*positions[i]+offset, 0.5);
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layout->add_to_cairo_context (cr);
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cr->fill_preserve ();
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cr->stroke ();
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}
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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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// check if a slider is under the cursor
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int w = get_width ();
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movingPosition = -1;
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for (int i=0; i<3; i++)
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if (event->x > w*positions[i]-wslider/2 && event->x < w*positions[i]+wslider/2) {
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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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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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if (movingPosition >= 0) {
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movingPosition = -1;
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queue_draw ();
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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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if (movingPosition >= 0) {
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int w = get_width ();
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positions[movingPosition] = tmpPos + (event->x - tmpX) / w;
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if (positions[movingPosition] < 0)
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positions[movingPosition] = 0.0;
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else if (movingPosition > 0 && positions[movingPosition] < positions[movingPosition-1]+wslider/w)
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positions[movingPosition] = positions[movingPosition-1]+wslider/w;
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if (positions[movingPosition] > 1.0)
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positions[movingPosition] = 1.0;
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else if (movingPosition <3 && positions[movingPosition] > positions[movingPosition+1]-wslider/w)
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positions[movingPosition] = positions[movingPosition+1]-wslider/w;
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if (cl)
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cl->shcChanged ();
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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::Style>& style) {
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queue_draw ();
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}
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void SHCSelector::reset () { // : movingPosition(-1), cl(NULL) {
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positions[0] = 0.25;
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positions[1] = 0.5;
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positions[2] = 0.75;
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queue_draw ();
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}
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