Pipette and "On Preview Widgets" branch. See issue 227
The pipette part is already working quite nice but need to be finished. The widgets part needs more work...
This commit is contained in:
Hombre
177
rtgui/coloredbar.cc
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177
rtgui/coloredbar.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 "coloredbar.h"
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ColoredBar::ColoredBar (eRTOrientation orient) {
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orientation = orient;
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dirty = true;
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this->x = this->y = this->w = this->h = 0;
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}
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/*
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* Redraw the bar to a Cairo::Surface
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*/
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void ColoredBar::expose(Cairo::RefPtr<Cairo::Surface> destSurface) {
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// look out if the Surface has to be redrawn
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if (!surfaceCreated() || !destSurface)
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return;
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draw();
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copySurface(destSurface);
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}
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/*
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* Redraw the bar to a Gdk::Window
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*/
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void ColoredBar::expose(Glib::RefPtr<Gdk::Window> destWindow) {
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// look out if the Surface has to be redrawn
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if (!surfaceCreated() || !destWindow)
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return;
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draw();
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copySurface(destWindow);
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}
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/*
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* Redraw the bar to a Gdk::Window
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*/
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void ColoredBar::expose(BackBuffer *backBuffer) {
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// look out if the Surface has to be redrawn
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if (!surfaceCreated() || !backBuffer)
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return;
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draw();
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copySurface(backBuffer);
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}
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void ColoredBar::draw() {
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if (isDirty()) {
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Cairo::RefPtr<Cairo::Context> cr = getContext();
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// the bar has to be drawn to the Surface first
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if (!bgGradient.empty()) {
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// a gradient has been set, we use it
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cr->set_line_width(0.);
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// gradient background
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Cairo::RefPtr< Cairo::LinearGradient > bggradient;
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switch (orientation) {
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case (RTO_Left2Right):
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bggradient = Cairo::LinearGradient::create (0., 0., double(w), 0.);
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break;
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case (RTO_Right2Left):
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bggradient = Cairo::LinearGradient::create (double(w), 0., 0., 0.);
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break;
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case (RTO_Bottom2Top):
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bggradient = Cairo::LinearGradient::create (0., double(h), 0., 0.);
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break;
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case (RTO_Top2Bottom):
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default:
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bggradient = Cairo::LinearGradient::create (0., 0., 0., double(h));
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break;
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}
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for (std::vector<GradientMilestone>::iterator i=bgGradient.begin(); i!=bgGradient.end(); i++) {
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bggradient->add_color_stop_rgb (i->position, i->r, i->g, i->b);
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}
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cr->set_source (bggradient);
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cr->rectangle(0, 0, w, h);
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cr->fill();
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}
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else {
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// ask the ColorProvider to provide colors :) for each pixels
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if (colorProvider) {
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cr->set_antialias(Cairo::ANTIALIAS_NONE);
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cr->set_line_width(1.);
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switch (orientation) {
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case (RTO_Left2Right):
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for (int x=0; x<w; x++) {
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for (int y=0; y<h; y++) {
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double x_ = double( x);
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double y_ = double((h-1)-y);
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double x01 = x_ /double(w-1);
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double y01 = double(y)/double(h-1);
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colorProvider->colorForValue (x01, y01, colorCallerId, this);
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cr->set_source_rgb(ccRed, ccGreen, ccBlue);
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cr->rectangle(x_, y_, 1., 1.);
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cr->fill();
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}
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}
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break;
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case (RTO_Right2Left):
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for (int x=0; x<w; x++) {
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for (int y=0; y<h; y++) {
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double x_ = double((w-1)-x);
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double y_ = double((h-1)-y);
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double x01 = double(x)/double(w-1);
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double y01 = double(y)/double(h-1);
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colorProvider->colorForValue (x01, y01, colorCallerId, this);
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cr->set_source_rgb(ccRed, ccGreen, ccBlue);
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cr->rectangle(x_, y_, 1., 1.);
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cr->fill();
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}
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}
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break;
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case (RTO_Bottom2Top):
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for (int x=0; x<w; x++) {
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for (int y=0; y<h; y++) {
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double x_ = double((w-1)-x);
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double y_ = double((h-1)-y);
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double x01 = double(x)/double(w-1);
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double y01 = double(y)/double(h-1);
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colorProvider->colorForValue (y01, x01, colorCallerId, this);
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cr->set_source_rgb(ccRed, ccGreen, ccBlue);
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cr->rectangle(x_, y_, 1., 1.);
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cr->fill();
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}
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}
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break;
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case (RTO_Top2Bottom):
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default:
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for (int x=0; x<w; x++) {
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for (int y=0; y<h; y++) {
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double x_ = double( x);
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double y_ = double( y);
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double x01 = x_/double(w-1);
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double y01 = y_/double(h-1);
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colorProvider->colorForValue (y01, x01, colorCallerId, this);
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cr->set_source_rgb(ccRed, ccGreen, ccBlue);
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cr->rectangle(x_, y_, 1., 1.);
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cr->fill();
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}
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}
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break;
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}
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}
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}
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// has it been updated or not, we assume that the Surface has been correctly set (we don't handle allocation error)
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setDirty(false);
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}
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}
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void ColoredBar::setBgGradient (const std::vector<GradientMilestone> &milestones) {
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bgGradient = milestones;
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setDirty(true);
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}
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void ColoredBar::clearBgGradient () {
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bgGradient.clear();
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setDirty(true);
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}
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bool ColoredBar::canGetColors() {
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return colorProvider!=NULL || bgGradient.size()>0;
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}
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