forked from mia/Aegisub
133 lines
3.6 KiB
C++
133 lines
3.6 KiB
C++
#include "image_position_picker.h"
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BEGIN_EVENT_TABLE(ImagePositionPicker, wxPanel)
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// some useful events
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/*
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EVT_MOTION(ImagePositionPicker::mouseMoved)
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EVT_LEFT_DOWN(ImagePositionPicker::mouseDown)
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EVT_LEFT_UP(ImagePositionPicker::mouseReleased)
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EVT_RIGHT_DOWN(ImagePositionPicker::rightClick)
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EVT_LEAVE_WINDOW(ImagePositionPicker::mouseLeftWindow)
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EVT_KEY_DOWN(ImagePositionPicker::keyPressed)
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EVT_KEY_UP(ImagePositionPicker::keyReleased)
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EVT_MOUSEWHEEL(ImagePositionPicker::mouseWheelMoved)
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*/
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// catch paint events
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EVT_PAINT(ImagePositionPicker::paintEvent)
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//Size event
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EVT_SIZE(ImagePositionPicker::OnSize)
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EVT_MOUSE_EVENTS(ImagePositionPicker::OnMouseEvent)
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END_EVENT_TABLE()
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// some useful events
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/*
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void ImagePositionPicker::mouseMoved(wxMouseEvent& event) {}
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void ImagePositionPicker::mouseDown(wxMouseEvent& event) {}
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void ImagePositionPicker::mouseWheelMoved(wxMouseEvent& event) {}
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void ImagePositionPicker::mouseReleased(wxMouseEvent& event) {}
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void ImagePositionPicker::rightClick(wxMouseEvent& event) {}
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void ImagePositionPicker::mouseLeftWindow(wxMouseEvent& event) {}
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void ImagePositionPicker::keyPressed(wxKeyEvent& event) {}
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void ImagePositionPicker::keyReleased(wxKeyEvent& event) {}
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*/
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ImagePositionPicker::ImagePositionPicker(wxWindow* parent, wxImage i, updator upd) : wxPanel(parent)
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{
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image = i;
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prevW = -1;
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prevH = -1;
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w = image.GetWidth();
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h = image.GetHeight();
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update = upd;
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}
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/*
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* Called by the system of by wxWidgets when the panel needs
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* to be redrawn. You can also trigger this call by
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* calling Refresh()/Update().
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*/
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void ImagePositionPicker::paintEvent(wxPaintEvent& evt)
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{
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// depending on your system you may need to look at double-buffered dcs
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wxPaintDC dc(this);
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render(dc);
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}
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/*
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* Alternatively, you can use a clientDC to paint on the panel
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* at any time. Using this generally does not free you from
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* catching paint events, since it is possible that e.g. the window
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* manager throws away your drawing when the window comes to the
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* background, and expects you will redraw it when the window comes
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* back (by sending a paint event).
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*/
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void ImagePositionPicker::paintNow()
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{
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// depending on your system you may need to look at double-buffered dcs
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wxClientDC dc(this);
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render(dc);
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}
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/*
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* Here we do the actual rendering. I put it in a separate
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* method so that it can work no matter what type of DC
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* (e.g. wxPaintDC or wxClientDC) is used.
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*/
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void ImagePositionPicker::render(wxDC& dc)
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{
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int neww, newh;
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dc.GetSize(&neww, &newh);
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if (neww != prevW || newh != prevH)
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{
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// keep the image proportionate
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int ww, hh;
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if (double(neww) / w >= double(newh) / h) // too long
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{
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ww = newh * w / h;
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hh = newh;
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}
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else
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{
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ww = neww;
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hh = neww * h / w;
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}
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resized = wxBitmap(image.Scale(ww, hh /*, wxIMAGE_QUALITY_HIGH*/));
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prevW = ww;
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prevH = hh;
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dc.DrawBitmap(resized, 0, 0, false);
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}
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else {
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dc.DrawBitmap(resized, 0, 0, false);
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}
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}
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/*
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* Here we call refresh to tell the panel to draw itself again.
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* So when the user resizes the image panel the image should be resized too.
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*/
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void ImagePositionPicker::OnSize(wxSizeEvent& event) {
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Refresh();
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//skip the event.
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event.Skip();
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}
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void ImagePositionPicker::OnMouseEvent(wxMouseEvent& evt)
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{
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wxPoint pos = evt.GetPosition();
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if (evt.Dragging() || evt.LeftDown() || evt.LeftUp())
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{
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int x = pos.x * w / prevW;
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int y = pos.y * h / prevH;
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if (x >= 0 && x < w && y >= 0 && y < h)
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update(x, y, image.GetRed(x, y), image.GetGreen(x, y), image.GetBlue(x, y));
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}
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else if (evt.LeftDClick()) {
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// Propagate the double click event to submit
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evt.ResumePropagation(wxEVENT_PROPAGATE_MAX);
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evt.Skip();
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}
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}
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