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316 lines
7.8 KiB
316 lines
7.8 KiB
/***************************************************************************
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cropframe.cpp - description
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-------------------
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begin : Mon Sep 30 2002
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copyright : (C) 2002 by Todd Shoemaker
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email : jtshoe11@yahoo.com
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***************************************************************************/
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/***************************************************************************
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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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***************************************************************************/
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// C Ansi includes.
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extern "C"
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{
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#include <math.h>
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#include <stdio.h>
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}
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// TQt includes.
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#include <tqpainter.h>
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#include <tqimage.h>
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// Local includes.
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#include "cropframe.h"
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#include "utils.h"
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namespace KIPIPrintWizardPlugin
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{
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CropFrame::CropFrame(TQWidget *parent, const char *name)
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: TQWidget(parent, name)
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{
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m_mouseDown = false;
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}
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// FIXME: This method is doing way too much. The cropFrame initialization
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// should be a TPhoto method, and should not require the scaling of
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// pixmaps to get the desired effect, which are too slow.
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void CropFrame::init(TPhoto *photo, int width, int height, bool autoRotate, bool paint)
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{
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m_photo = photo;
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TQImage scaledImg = m_photo->thumbnail().convertToImage();
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// has the cropRegion been set yet?
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bool resetCropRegion = (m_photo->cropRegion == TQRect(-1, -1, -1, -1));
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if (resetCropRegion)
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{
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// first, let's see if we should rotate
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if (autoRotate) {
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if (m_photo->rotation == 0 && ((width > height &&
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m_photo->thumbnail().height() > m_photo->thumbnail().width()) ||
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(height > width &&
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m_photo->thumbnail().width() > m_photo->thumbnail().height())) )
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{
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// rotate
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m_photo->rotation = 90;
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}
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}
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}
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else
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{
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// does the crop region need updating (but the image shouldn't be rotated)?
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resetCropRegion = (m_photo->cropRegion == TQRect(-2, -2, -2, -2));
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}
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// rotate
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TQWMatrix matrix;
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matrix.rotate(m_photo->rotation);
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scaledImg = scaledImg.xForm(matrix);
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scaledImg = scaledImg.smoothScale(this->width(), this->height(), TQImage::ScaleMin);
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m_pixmap = new TQPixmap();
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m_pixmap->convertFromImage(scaledImg);
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m_pixmapX = (this->width() / 2) - (m_pixmap->width() / 2);
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m_pixmapY = (this->height() / 2) - (m_pixmap->height() / 2);
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m_color = TQt::red;
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// size the rectangle based on the minimum image dimension
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int w = m_pixmap->width();
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int h = m_pixmap->height();;
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if (w < h)
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{
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h = NINT((double)w * ((double)height / (double)width));
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if (h > m_pixmap->height())
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{
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h = m_pixmap->height();
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w = NINT((double)h * ((double)width / (double)height));
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}
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}
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else
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{
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w = NINT((double)h * ((double)width / (double)height));
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if (w > m_pixmap->width())
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{
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w = m_pixmap->width();
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h = NINT((double)w * ((double)height / (double)width));
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}
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}
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if (resetCropRegion)
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{
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m_cropRegion.setRect((this->width() / 2) - (w / 2), (this->height() / 2) - (h / 2), w, h);
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m_photo->cropRegion = _screenToPhotoRect(m_cropRegion);
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}
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else
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m_cropRegion = _photoToScreenRect(m_photo->cropRegion);
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if (paint)
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repaint(false);
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}
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TQRect CropFrame::_screenToPhotoRect(TQRect r)
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{
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// r is given in screen coordinates, and we want to convert that
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// to photo coordinates
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double xRatio = 0.0;
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double yRatio = 0.0;
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// flip the photo dimensions if rotated
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int photoW;
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int photoH;
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if (m_photo->rotation == 0 || m_photo->rotation == 180)
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{
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photoW = m_photo->width();
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photoH = m_photo->height();
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}
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else
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{
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photoW = m_photo->height();
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photoH = m_photo->width();
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}
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if (m_pixmap->width() > 0)
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xRatio = (double) photoW / (double) m_pixmap->width();
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if (m_pixmap->height() > 0)
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yRatio = (double) photoH / (double) m_pixmap->height();
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int x1 = NINT((r.left() - m_pixmapX) * xRatio);
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int y1 = NINT((r.top() - m_pixmapY) * yRatio);
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int w = NINT(r.width() * xRatio);
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int h = NINT(r.height() * yRatio);
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TQRect result;
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result.setRect(x1, y1, w, h);
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return result;
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}
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TQRect CropFrame::_photoToScreenRect(TQRect r)
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{
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// r is given in photo coordinates, and we want to convert that
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// to screen coordinates
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double xRatio = 0.0;
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double yRatio = 0.0;
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// flip the photo dimensions if rotated
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int photoW;
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int photoH;
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if (m_photo->rotation == 0 || m_photo->rotation == 180)
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{
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photoW = m_photo->width();
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photoH = m_photo->height();
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}
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else
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{
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photoW = m_photo->height();
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photoH = m_photo->width();
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}
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if (m_photo->width() > 0)
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xRatio = (double) m_pixmap->width() / (double) photoW;
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if (m_photo->height() > 0)
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yRatio = (double)m_pixmap->height() / (double)photoH;
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int x1 = NINT(r.left() * xRatio + m_pixmapX);
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int y1 = NINT(r.top() * yRatio + m_pixmapY);
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int w = NINT(r.width() * xRatio);
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int h = NINT(r.height() * yRatio);
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TQRect result;
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result.setRect(x1, y1, w, h);
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return result;
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}
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CropFrame::~CropFrame()
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{
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}
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void CropFrame::paintEvent (TQPaintEvent *)
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{
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TQPixmap bmp(this->width(), this->height());
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TQPainter p;
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p.begin(&bmp);
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p.eraseRect(0, 0, this->width(), this->height());
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// draw the background pixmap
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p.drawPixmap(m_pixmapX, m_pixmapY, *m_pixmap);
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// draw the rectangle
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p.setPen(TQPen(m_color, 2));
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p.drawRect(m_cropRegion);
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// draw the crosshairs
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int midX = m_cropRegion.left() + m_cropRegion.width() / 2;
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int midY = m_cropRegion.top() + m_cropRegion.height() / 2;
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p.drawLine(midX - 10, midY, midX + 10, midY);
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p.drawLine(midX, midY - 10, midX, midY + 10);
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p.end();
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TQPainter newp(this);
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newp.drawPixmap(0, 0, bmp);
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}
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void CropFrame::mousePressEvent(TQMouseEvent *e)
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{
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if (e->button() == TQt::LeftButton)
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{
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m_mouseDown = true;
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this->mouseMoveEvent(e);
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}
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}
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void CropFrame::mouseReleaseEvent(TQMouseEvent *e)
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{
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if (e->button() == TQt::LeftButton)
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m_mouseDown = false;
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}
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void CropFrame::mouseMoveEvent(TQMouseEvent *e)
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{
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if (m_mouseDown)
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{
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// don't let the rectangle float off the image.
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int newW = m_cropRegion.width();
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int newH = m_cropRegion.height();
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int newX = e->x() - (newW / 2);
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newX = MAX(m_pixmapX, newX);
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newX = MIN(m_pixmapX + m_pixmap->width() - newW, newX);
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int newY = e->y() - (newH / 2);
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newY = MAX(m_pixmapY, newY);
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newY = MIN(m_pixmapY + m_pixmap->height() - newH, newY);
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m_cropRegion.setRect(newX, newY, newW, newH);
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m_photo->cropRegion = _screenToPhotoRect(m_cropRegion);
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repaint(false);
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}
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}
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void CropFrame::keyPressEvent(TQKeyEvent *e)
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{
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int newX = m_cropRegion.x();
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int newY = m_cropRegion.y();
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switch (e->key()) {
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case TQt::Key_Up : newY--;
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break;
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case TQt::Key_Down : newY++;
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break;
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case TQt::Key_Left : newX--;
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break;
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case TQt::Key_Right : newX++;
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break;
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}
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// keep inside the pixmap
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int w = m_cropRegion.width();
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int h = m_cropRegion.height();
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newX = MAX(m_pixmapX, newX);
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newX = MIN(m_pixmapX + m_pixmap->width() - w, newX);
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newY = MAX(m_pixmapY, newY);
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newY = MIN(m_pixmapY + m_pixmap->height() - h, newY);
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m_cropRegion.setRect(newX, newY, w, h);
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m_photo->cropRegion = _screenToPhotoRect(m_cropRegion);
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repaint(false);
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}
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void CropFrame::setColor(TQColor c)
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{
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m_color = c;
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repaint(false);
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}
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TQColor CropFrame::color()
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{
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return m_color;
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}
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} // NameSpace KIPIPrintWizardPlugin
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#include "cropframe.moc"
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