rawTherapee/rtgui/inspector.cc
2016-02-21 10:26:11 +01:00

291 lines
8.1 KiB
C++

/*
* This file is part of RawTherapee.
*
* Copyright (c) 2004-2010 Gabor Horvath <hgabor@rawtherapee.com>
*
* RawTherapee is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* RawTherapee is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with RawTherapee. If not, see <http://www.gnu.org/licenses/>.
*/
#include "inspector.h"
#include "guiutils.h"
#include <gtkmm.h>
#include "cursormanager.h"
#include "guiutils.h"
#include "options.h"
#include "../rtengine/previewimage.h"
extern Options options;
InspectorBuffer::InspectorBuffer(const Glib::ustring &imagePath) : currTransform(0), fromRaw(false)
{
if (!imagePath.empty() && Glib::file_test(imagePath, Glib::FILE_TEST_EXISTS) && !Glib::file_test(imagePath, Glib::FILE_TEST_IS_DIR)) {
imgPath = imagePath;
// generate thumbnail image
Glib::ustring ext = getExtension (imagePath);
if (ext == "") {
imgPath.clear();
return;
}
rtengine::PreviewImage pi(imagePath, ext, rtengine::PreviewImage::PIM_EmbeddedOrRaw);
Cairo::RefPtr<Cairo::ImageSurface> imageSurface = pi.getImage();
if (imageSurface) {
imgBuffer.setSurface(imageSurface);
fromRaw = true;
} else {
imgPath.clear();
}
}
}
/*
InspectorBuffer::~InspectorBuffer() {
}
*/
int InspectorBuffer::infoFromImage (const Glib::ustring& fname)
{
rtengine::ImageMetaData* idata = rtengine::ImageMetaData::fromFile (fname, NULL);
if (!idata) {
return 0;
}
int deg = 0;
if (idata->hasExif()) {
if (idata->getOrientation() == "Rotate 90 CW" ) {
deg = 90;
} else if (idata->getOrientation() == "Rotate 180" ) {
deg = 180;
} else if (idata->getOrientation() == "Rotate 270 CW") {
deg = 270;
}
}
delete idata;
return deg;
}
Inspector::Inspector () : currImage(NULL), zoom(0.0), active(false) {}
Inspector::~Inspector()
{
deleteBuffers();
}
bool Inspector::on_expose_event (GdkEventExpose* event)
{
Glib::RefPtr<Gdk::Window> win = get_window();
if (!win) {
return false;
}
if (!active) {
active = true;
}
// cleanup the region
if (currImage && currImage->imgBuffer.surfaceCreated()) {
// this will eventually create/update the off-screen pixmap
// compute the displayed area
rtengine::Coord availableSize;
rtengine::Coord topLeft;
rtengine::Coord displayedSize;
rtengine::Coord dest(0, 0);
win->get_size(availableSize.x, availableSize.y);
int imW = currImage->imgBuffer.getWidth();
int imH = currImage->imgBuffer.getHeight();
if (imW < availableSize.x) {
// center the image in the available space along X
topLeft.x = 0;
displayedSize.x = availableSize.x;
dest.x = (availableSize.x - imW) / 2;
} else {
// partial image display
// double clamp
topLeft.x = center.x + availableSize.x / 2;
topLeft.x = rtengine::min<int>(topLeft.x, imW);
topLeft.x -= availableSize.x;
topLeft.x = rtengine::max<int>(topLeft.x, 0);
}
if (imH < availableSize.y) {
// center the image in the available space along Y
topLeft.y = 0;
displayedSize.y = availableSize.y;
dest.y = (availableSize.y - imH) / 2;
} else {
// partial image display
// double clamp
topLeft.y = center.y + availableSize.y / 2;
topLeft.y = rtengine::min<int>(topLeft.y, imH);
topLeft.y -= availableSize.y;
topLeft.y = rtengine::max<int>(topLeft.y, 0);
}
//printf("center: %d, %d (img: %d, %d) (availableSize: %d, %d) (topLeft: %d, %d)\n", center.x, center.y, imW, imH, availableSize.x, availableSize.y, topLeft.x, topLeft.y);
// define the destination area
currImage->imgBuffer.setDrawRectangle(win, dest.x, dest.y, rtengine::min<int>(availableSize.x - dest.x, imW), rtengine::min<int>(availableSize.y - dest.y, imH), false);
currImage->imgBuffer.setSrcOffset(topLeft.x, topLeft.y);
if (!currImage->imgBuffer.surfaceCreated()) {
return false;
}
// Draw!
Gdk::Color c;
Cairo::RefPtr<Cairo::Context> cr = win->create_cairo_context();
Glib::RefPtr<Gtk::Style> style = get_style();
// draw the background
c = style->get_bg (Gtk::STATE_NORMAL);
cr->set_source_rgb (c.get_red_p(), c.get_green_p(), c.get_blue_p());
cr->set_line_width (0);
cr->rectangle (0, 0, availableSize.x, availableSize.y);
cr->fill ();
currImage->imgBuffer.copySurface(win);
// draw the frame
c = style->get_fg (Gtk::STATE_NORMAL);
cr->set_source_rgb (c.get_red_p(), c.get_green_p(), c.get_blue_p());
cr->set_line_width (1);
cr->rectangle (0.5, 0.5, availableSize.x - 1, availableSize.y - 1);
cr->stroke ();
}
return true;
}
void Inspector::mouseMove (rtengine::Coord2D pos, int transform)
{
if (!active) {
return;
}
if (currImage) {
center.set(int(rtengine::LIM01(pos.x)*double(currImage->imgBuffer.getWidth())), int(rtengine::LIM01(pos.y)*double(currImage->imgBuffer.getHeight())));
} else {
center.set(0, 0);
}
queue_draw();
}
void Inspector::switchImage (const Glib::ustring &fullPath)
{
if (!active) {
return;
}
// we first check the size of the list, it may have been changed in Preference
if (images.size() > size_t(options.maxInspectorBuffers)) {
// deleting the last entries
for (size_t i = images.size() - 1; i > size_t(options.maxInspectorBuffers - 1); --i) {
delete images.at(i);
images.at(i) = NULL;
}
// resizing down
images.resize(options.maxInspectorBuffers);
}
if (fullPath.empty()) {
currImage = NULL;
queue_draw();
return;
} else {
bool found = false;
for (size_t i = 0; i < images.size(); ++i) {
if (images.at(i) != NULL && images.at(i)->imgPath == fullPath) {
currImage = images.at(i);
// rolling the list 1 step to the beginning
for (size_t j = i; j < images.size() - 1; ++j) {
images.at(j) = images.at(j + 1);
}
images.at(images.size() - 1) = currImage; // move the last used image to the tail
found = true;
break;
}
}
if (!found) {
if (images.size() == size_t(options.maxInspectorBuffers)) {
// The list is full, delete the first entry
delete images.at(0);
images.erase(images.begin());
}
// Loading a new image
InspectorBuffer *iBuffer = new InspectorBuffer(fullPath);
// and add it to the tail
if (!iBuffer->imgPath.empty()) {
images.push_back(iBuffer);
currImage = images.at(images.size() - 1);
} else {
currImage = NULL;
}
}
}
}
void Inspector::deleteBuffers ()
{
for (size_t i = 0; i < images.size(); ++i) {
if (images.at(i) != NULL) {
delete images.at(i);
images.at(i) = NULL;
}
}
images.resize(0);
currImage = NULL;
}
void Inspector::flushBuffers ()
{
if (!active) {
return;
}
deleteBuffers();
}
void Inspector::setActive(bool state)
{
if (!state) {
flushBuffers();
}
active = state;
}