Aegisub/aegisub/src/video_display.cpp

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// Copyright (c) 2005-2010, Rodrigo Braz Monteiro
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// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// * Redistributions of source code must retain the above copyright notice,
// this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above copyright notice,
// this list of conditions and the following disclaimer in the documentation
// and/or other materials provided with the distribution.
// * Neither the name of the Aegisub Group nor the names of its contributors
// may be used to endorse or promote products derived from this software
// without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.
//
// Aegisub Project http://www.aegisub.org/
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//
// $Id$
/// @file video_display.cpp
/// @brief Control displaying a video frame obtained from the video context
/// @ingroup video main_ui
///
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// Includes
#include "config.h"
#ifndef AGI_PRE
#include <algorithm>
#include <wx/clipbrd.h>
#include <wx/dataobj.h>
#include <wx/dcclient.h>
#include <wx/glcanvas.h>
#include <wx/menu.h>
#include <wx/toolbar.h>
#endif
#ifdef __APPLE__
#include <OpenGL/GL.h>
#include <OpenGL/glu.h>
#else
#include <GL/gl.h>
#include <GL/glu.h>
#endif
#include "video_display.h"
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#include "ass_dialogue.h"
#include "hotkeys.h"
#include "main.h"
#include "subs_grid.h"
#include "threaded_frame_source.h"
#include "video_out_gl.h"
#include "video_box.h"
#include "video_context.h"
#include "video_slider.h"
#include "visual_tool.h"
#include "visual_tool_clip.h"
#include "visual_tool_cross.h"
#include "visual_tool_drag.h"
#include "visual_tool_rotatexy.h"
#include "visual_tool_rotatez.h"
#include "visual_tool_scale.h"
#include "visual_tool_vector_clip.h"
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// Menu item IDs
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enum {
/// Copy mouse coordinates to clipboard
VIDEO_MENU_COPY_COORDS = 1230,
/// Copy frame to clipboard with subtitles
VIDEO_MENU_COPY_TO_CLIPBOARD,
/// Copy frame to clipboard without subtitles
VIDEO_MENU_COPY_TO_CLIPBOARD_RAW,
/// Save frame with subtitles
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VIDEO_MENU_SAVE_SNAPSHOT,
/// Save frame without subtitles
VIDEO_MENU_SAVE_SNAPSHOT_RAW
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};
BEGIN_EVENT_TABLE(VideoDisplay, wxGLCanvas)
EVT_MOUSE_EVENTS(VideoDisplay::OnMouseEvent)
EVT_KEY_DOWN(VideoDisplay::OnKey)
EVT_PAINT(VideoDisplay::OnPaint)
EVT_SIZE(VideoDisplay::OnSizeEvent)
EVT_ERASE_BACKGROUND(VideoDisplay::OnEraseBackground)
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EVT_MENU(VIDEO_MENU_COPY_COORDS,VideoDisplay::OnCopyCoords)
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EVT_MENU(VIDEO_MENU_COPY_TO_CLIPBOARD,VideoDisplay::OnCopyToClipboard)
EVT_MENU(VIDEO_MENU_SAVE_SNAPSHOT,VideoDisplay::OnSaveSnapshot)
EVT_MENU(VIDEO_MENU_COPY_TO_CLIPBOARD_RAW,VideoDisplay::OnCopyToClipboardRaw)
EVT_MENU(VIDEO_MENU_SAVE_SNAPSHOT_RAW,VideoDisplay::OnSaveSnapshotRaw)
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END_EVENT_TABLE()
/// Attribute list for gl canvases; set the canvases to doublebuffered rgba with an 8 bit stencil buffer
int attribList[] = { WX_GL_RGBA , WX_GL_DOUBLEBUFFER, WX_GL_STENCIL_SIZE, 8, 0 };
/// @class VideoOutRenderException
/// @extends VideoOutException
/// @brief An OpenGL error occured while uploading or displaying a frame
class OpenGlException : public agi::Exception {
public:
OpenGlException(const wxChar *func, int err)
: agi::Exception(STD_STR(wxString::Format("%s failed with error code %d", func, err)))
{ }
const char * GetName() const { return "video/opengl"; }
Exception * Copy() const { return new OpenGlException(*this); }
};
#define E(cmd) cmd; if (GLenum err = glGetError()) throw OpenGlException(L###cmd, err)
using std::min;
VideoDisplay::VideoDisplay(VideoBox *box, VideoSlider *ControlSlider, wxTextCtrl *PositionDisplay, wxTextCtrl *SubsPosition, wxWindow* parent, wxWindowID id, const wxPoint& pos, const wxSize& size, long style, const wxString& name)
: wxGLCanvas (parent, id, attribList, pos, size, style, name)
, alwaysShowTools(OPT_GET("Tool/Visual/Always Show"))
, origSize(size)
, currentFrame(-1)
, w(8), h(8), viewport_x(0), viewport_width(0), viewport_bottom(0), viewport_top(0), viewport_height(0)
, locked(false)
, zoomValue(1.0)
, ControlSlider(ControlSlider)
, SubsPosition(SubsPosition)
, PositionDisplay(PositionDisplay)
, videoOut(new VideoOutGL())
, activeMode(Video_Mode_Standard)
, toolBar(box->visualSubToolBar)
, scriptW(INT_MIN)
, scriptH(INT_MIN)
, box(box)
, freeSize(false)
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{
box->Bind(wxEVT_COMMAND_TOOL_CLICKED, &VideoDisplay::OnMode, this, Video_Mode_Standard, Video_Mode_Vector_Clip);
VideoContext::Get()->Bind(EVT_FRAME_READY, &VideoDisplay::UploadFrameData, this);
SetCursor(wxNullCursor);
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}
VideoDisplay::~VideoDisplay () {
VideoContext::Get()->Unbind(EVT_FRAME_READY, &VideoDisplay::UploadFrameData, this);
VideoContext::Get()->RemoveDisplay(this);
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}
bool VideoDisplay::InitContext() {
if (!IsShownOnScreen()) return false;
if (!glContext.get()) {
glContext.reset(new wxGLContext(this));
}
SetCurrent(*glContext.get());
return true;
}
void VideoDisplay::ShowCursor(bool show) {
if (show) {
SetCursor(wxNullCursor);
}
else {
wxCursor cursor(wxCURSOR_BLANK);
SetCursor(cursor);
}
}
void VideoDisplay::SetFrame(int frameNumber) {
VideoContext *context = VideoContext::Get();
ControlSlider->SetValue(frameNumber);
currentFrame = frameNumber;
// Get time for frame
{
int time = context->TimeAtFrame(frameNumber, agi::vfr::EXACT);
int h = time / 3600000;
int m = time % 3600000 / 60000;
int s = time % 60000 / 1000;
int ms = time % 1000;
// Set the text box for frame number and time
PositionDisplay->SetValue(wxString::Format(L"%01i:%02i:%02i.%03i - %i", h, m, s, ms, frameNumber));
if (std::binary_search(context->GetKeyFrames().begin(), context->GetKeyFrames().end(), frameNumber)) {
// Set the background color to indicate this is a keyframe
PositionDisplay->SetBackgroundColour(lagi_wxColour(OPT_GET("Colour/Subtitle Grid/Background/Selection")->GetColour()));
PositionDisplay->SetForegroundColour(lagi_wxColour(OPT_GET("Colour/Subtitle Grid/Selection")->GetColour()));
}
else {
PositionDisplay->SetBackgroundColour(wxNullColour);
PositionDisplay->SetForegroundColour(wxNullColour);
}
wxString startSign;
wxString endSign;
int startOff = 0;
int endOff = 0;
if (AssDialogue *curLine = context->grid->GetActiveLine()) {
startOff = time - curLine->Start.GetMS();
endOff = time - curLine->End.GetMS();
}
// Positive signs
if (startOff > 0) startSign = L"+";
if (endOff > 0) endSign = L"+";
// Set the text box for time relative to active subtitle line
SubsPosition->SetValue(wxString::Format(L"%s%ims; %s%ims", startSign.c_str(), startOff, endSign.c_str(), endOff));
}
// Render the new frame
if (context->IsLoaded()) {
context->GetScriptSize(scriptW, scriptH);
tool->SetFrame(frameNumber);
context->GetFrameAsync(currentFrame);
}
}
void VideoDisplay::UploadFrameData(FrameReadyEvent &evt) {
if (!InitContext()) return;
try {
videoOut->UploadFrameData(*evt.frame);
}
catch (const VideoOutInitException& err) {
wxLogError(
L"Failed to initialize video display. Closing other running "
L"programs and updating your video card drivers may fix this.\n"
L"Error message reported: %s",
err.GetMessage().c_str());
VideoContext::Get()->Reset();
}
catch (const VideoOutRenderException& err) {
wxLogError(
L"Could not upload video frame to graphics card.\n"
L"Error message reported: %s",
err.GetMessage().c_str());
}
Render();
}
void VideoDisplay::Refresh() {
if (!tool.get()) tool.reset(new VisualToolCross(this, video, toolBar));
if (!InitContext()) return;
VideoContext::Get()->GetFrameAsync(currentFrame);
tool->Refresh();
}
void VideoDisplay::SetFrameRange(int from, int to) {
ControlSlider->SetRange(from, to);
}
void VideoDisplay::Render() try {
if (!InitContext()) return;
VideoContext *context = VideoContext::Get();
if (!context->IsLoaded()) return;
assert(wxIsMainThread());
assert(w > 0);
videoOut->Render(viewport_x, viewport_bottom, viewport_width, viewport_height);
E(glViewport(0, min(viewport_bottom, 0), w, h));
E(glMatrixMode(GL_PROJECTION));
E(glLoadIdentity());
E(glOrtho(0.0f, w, h, 0.0f, -1000.0f, 1000.0f));
if (OPT_GET("Video/Overscan Mask")->GetBool()) {
double ar = context->GetAspectRatioValue();
// Based on BBC's guidelines: http://www.bbc.co.uk/guidelines/dq/pdf/tv/tv_standards_london.pdf
// 16:9 or wider
if (ar > 1.75) {
DrawOverscanMask(w * 0.1, h * 0.05, wxColor(30,70,200),0.5);
DrawOverscanMask(w * 0.035, h * 0.035, wxColor(30,70,200),0.5);
}
// Less wide than 16:9 (use 4:3 standard)
else {
DrawOverscanMask(w * 0.067, h * 0.05, wxColor(30,70,200),0.5);
DrawOverscanMask(w * 0.033, h * 0.035, wxColor(30,70,200),0.5);
}
}
if (video.x > INT_MIN || video.y > INT_MIN || alwaysShowTools->GetBool()) {
tool->Draw();
}
glFinish();
SwapBuffers();
}
catch (const VideoOutException &err) {
wxLogError(
L"An error occurred trying to render the video frame on the screen.\n"
L"Error message reported: %s",
err.GetMessage().c_str());
VideoContext::Get()->Reset();
}
catch (const OpenGlException &err) {
wxLogError(
L"An error occurred trying to render visual overlays on the screen.\n"
L"Error message reported: %s",
err.GetMessage().c_str());
VideoContext::Get()->Reset();
}
catch (const wchar_t *err) {
wxLogError(
L"An error occurred trying to render the video frame on the screen.\n"
L"Error message reported: %s",
err);
VideoContext::Get()->Reset();
}
catch (...) {
wxLogError(
L"An error occurred trying to render the video frame to screen.\n"
L"No further error message given.");
VideoContext::Get()->Reset();
}
void VideoDisplay::DrawOverscanMask(int sizeH, int sizeV, wxColor color, double alpha) const {
int rad1 = h * 0.05;
int gapH = sizeH+rad1;
int gapV = sizeV+rad1;
int rad2 = sqrt(double(gapH*gapH + gapV*gapV)) + 1;
OpenGLWrapper gl;
E(gl.SetFillColour(color, alpha));
gl.SetLineColour(wxColor(0, 0, 0), 0.0, 1);
// Draw sides
E(gl.DrawRectangle(gapH, 0, w-gapH, sizeV)); // Top
E(gl.DrawRectangle(w-sizeH, gapV, w, h-gapV)); // Right
E(gl.DrawRectangle(gapH, h-sizeV, w-gapH, h)); // Bottom
E(gl.DrawRectangle(0, gapV, sizeH, h-gapV)); // Left
// Draw rounded corners
E(gl.DrawRing(gapH, gapV, rad1, rad2, 1.0, 180.0, 270.0)); // Top-left
E(gl.DrawRing(w-gapH, gapV, rad1, rad2, 1.0, 90.0, 180.0)); // Top-right
E(gl.DrawRing(w-gapH, h-gapV, rad1, rad2, 1.0, 0.0, 90.0)); // Bottom-right
E(gl.DrawRing(gapH, h-gapV, rad1, rad2, 1.0,270.0,360.0)); // Bottom-left
E(glDisable(GL_BLEND));
}
void VideoDisplay::UpdateSize() {
VideoContext *con = VideoContext::Get();
wxASSERT(con);
if (!con->IsLoaded()) return;
if (!IsShownOnScreen()) return;
int vidW = con->GetWidth();
int vidH = con->GetHeight();
if (freeSize) {
GetClientSize(&w,&h);
viewport_x = 0;
viewport_bottom = 0;
viewport_top = 0;
viewport_width = w;
viewport_height = h;
// Set aspect ratio
float displayAr = float(w) / float(h);
float videoAr = con->GetAspectRatioType() == 0 ? float(vidW)/float(vidH) : con->GetAspectRatioValue();
// Window is wider than video, blackbox left/right
if (displayAr - videoAr > 0.01f) {
int delta = w - videoAr * h;
viewport_x = delta / 2;
viewport_width = w - delta;
}
// Video is wider than window, blackbox top/bottom
else if (videoAr - displayAr > 0.01f) {
int delta = h - w / videoAr;
viewport_top = viewport_bottom = delta / 2;
viewport_height = h - delta;
}
}
else {
wxWindow* parent = GetParent();
while (!parent->IsTopLevel()) parent = parent->GetParent();
int maxH, maxW;
parent->GetClientSize(&maxW, &maxH);
h = vidH * zoomValue;
w = con->GetAspectRatioType() == 0 ? vidW * zoomValue : vidH * zoomValue * con->GetAspectRatioValue();
// Cap the canvas size to the window size
int cw = min(w, maxW), ch = min(h, maxH);
viewport_x = 0;
viewport_bottom = ch - h;
viewport_top = 0;
viewport_width = w;
viewport_height = h;
// Sizers ignore SetClientSize/SetSize, so only use them to calculate
// what size is required after including the borders
SetClientSize(cw, ch);
GetSize(&cw, &ch);
wxSize size(cw, ch);
SetMinSize(size);
SetMaxSize(size);
locked = true;
box->VideoSizer->Fit(box);
box->GetParent()->Layout();
// The sizer makes us use the full width, which at very low zoom levels
// results in stretched video, so after using the sizer to update the
// parent window sizes, reset our size to the correct value
SetSize(cw, ch);
locked = false;
}
con->GetScriptSize(scriptW, scriptH);
video.w = w;
video.h = h;
if (tool.get()) tool->Refresh();
wxGLCanvas::Refresh(false);
}
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void VideoDisplay::Reset() {
// Only calculate sizes if it's visible
if (!IsShownOnScreen()) return;
int w = origSize.GetX();
int h = origSize.GetY();
wxASSERT(w > 0);
wxASSERT(h > 0);
SetClientSize(w,h);
GetSize(&w,&h);
wxASSERT(w > 0);
wxASSERT(h > 0);
SetSizeHints(w,h,w,h);
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}
void VideoDisplay::OnPaint(wxPaintEvent&) {
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wxPaintDC dc(this);
Render();
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}
void VideoDisplay::OnSizeEvent(wxSizeEvent &event) {
if (freeSize) UpdateSize();
event.Skip();
}
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void VideoDisplay::OnMouseEvent(wxMouseEvent& event) {
if (locked) return;
assert(w > 0);
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// Disable when playing
if (VideoContext::Get()->IsPlaying()) return;
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if (event.ButtonUp(wxMOUSE_BTN_RIGHT)) {
wxMenu menu;
menu.Append(VIDEO_MENU_SAVE_SNAPSHOT,_("Save PNG snapshot"));
menu.Append(VIDEO_MENU_COPY_TO_CLIPBOARD,_("Copy image to Clipboard"));
menu.AppendSeparator();
menu.Append(VIDEO_MENU_SAVE_SNAPSHOT_RAW,_("Save PNG snapshot (no subtitles)"));
menu.Append(VIDEO_MENU_COPY_TO_CLIPBOARD_RAW,_("Copy image to Clipboard (no subtitles)"));
menu.AppendSeparator();
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menu.Append(VIDEO_MENU_COPY_COORDS,_("Copy coordinates to Clipboard"));
// Show cursor and popup
ShowCursor(true);
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PopupMenu(&menu);
return;
}
if (event.ButtonDown(wxMOUSE_BTN_ANY)) {
SetFocus();
}
int wheel = event.GetWheelRotation();
if (wheel) {
SetZoom (zoomValue + .125 * (wheel / event.GetWheelDelta()));
}
if (event.Leaving()) {
video.x = INT_MIN;
video.y = INT_MIN;
}
else {
video.x = event.GetX();
video.y = event.GetY();
}
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tool->OnMouseEvent(event);
ShowCursor(activeMode != Video_Mode_Standard);
}
void VideoDisplay::OnKey(wxKeyEvent &event) {
int key = event.GetKeyCode();
#ifdef __APPLE__
Hotkeys.SetPressed(key, event.m_metaDown, event.m_altDown, event.m_shiftDown);
#else
Hotkeys.SetPressed(key, event.m_controlDown, event.m_altDown, event.m_shiftDown);
#endif
if (Hotkeys.IsPressed(L"Visual Tool Default")) SetMode(Video_Mode_Standard);
else if (Hotkeys.IsPressed(L"Visual Tool Drag")) SetMode(Video_Mode_Drag);
else if (Hotkeys.IsPressed(L"Visual Tool Rotate Z")) SetMode(Video_Mode_Rotate_Z);
else if (Hotkeys.IsPressed(L"Visual Tool Rotate X/Y")) SetMode(Video_Mode_Rotate_XY);
else if (Hotkeys.IsPressed(L"Visual Tool Scale")) SetMode(Video_Mode_Scale);
else if (Hotkeys.IsPressed(L"Visual Tool Rectangular Clip")) SetMode(Video_Mode_Clip);
else if (Hotkeys.IsPressed(L"Visual Tool Vector Clip")) SetMode(Video_Mode_Vector_Clip);
event.Skip();
}
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void VideoDisplay::SetZoom(double value) {
using std::max;
zoomValue = max(value, .125);
zoomBox->SetValue(wxString::Format("%g%%", zoomValue * 100.));
UpdateSize();
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}
void VideoDisplay::SetZoomFromBox() {
wxString strValue = zoomBox->GetValue();
strValue.EndsWith(L"%", &strValue);
double value;
if (strValue.ToDouble(&value)) {
zoomValue = value / 100.;
UpdateSize();
}
}
double VideoDisplay::GetZoom() const {
return zoomValue;
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}
template<class T>
void VideoDisplay::SetTool() {
tool.reset();
tool.reset(new T(this, video, toolBar));
box->Bind(wxEVT_COMMAND_TOOL_CLICKED, &T::OnSubTool, static_cast<T*>(tool.get()), VISUAL_SUB_TOOL_START, VISUAL_SUB_TOOL_END);
}
void VideoDisplay::OnMode(const wxCommandEvent &event) {
SetMode(event.GetId());
}
void VideoDisplay::SetMode(int mode) {
if (activeMode == mode) return;
toolBar->ClearTools();
toolBar->Realize();
toolBar->Show(false);
if (!box->visualToolBar->GetToolState(mode)) {
box->visualToolBar->ToggleTool(mode, true);
}
activeMode = mode;
switch (mode) {
case Video_Mode_Standard: SetTool<VisualToolCross>(); break;
case Video_Mode_Drag: SetTool<VisualToolDrag>(); break;
case Video_Mode_Rotate_Z: SetTool<VisualToolRotateZ>(); break;
case Video_Mode_Rotate_XY: SetTool<VisualToolRotateXY>(); break;
case Video_Mode_Scale: SetTool<VisualToolScale>(); break;
case Video_Mode_Clip: SetTool<VisualToolClip>(); break;
case Video_Mode_Vector_Clip: SetTool<VisualToolVectorClip>(); break;
default: assert(false); break;
}
// Update size as the new typesetting tool may have changed the subtoolbar size
UpdateSize();
}
void VideoDisplay::ToScriptCoords(int *x, int *y) const {
int sx = *x - viewport_x > 0 ? viewport_width : -viewport_width;
int sy = *y - viewport_top > 0 ? viewport_height : -viewport_height;
*x = ((*x - viewport_x) * scriptW + sx / 2) / viewport_width;
*y = ((*y - viewport_top) * scriptH + sy / 2) / viewport_height;
}
void VideoDisplay::FromScriptCoords(int *x, int *y) const {
int sx = *x > 0 ? scriptW : -scriptW;
int sy = *y > 0 ? scriptH : -scriptH;
*x = (*x * viewport_width + sx / 2) / scriptW + viewport_x;
*y = (*y * viewport_height + sy / 2) / scriptH + viewport_top;
}
void VideoDisplay::OnCopyToClipboard(wxCommandEvent &) {
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if (wxTheClipboard->Open()) {
wxTheClipboard->SetData(new wxBitmapDataObject(wxBitmap(VideoContext::Get()->GetFrame(currentFrame).GetImage(),24)));
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wxTheClipboard->Close();
}
}
void VideoDisplay::OnCopyToClipboardRaw(wxCommandEvent &) {
if (wxTheClipboard->Open()) {
wxTheClipboard->SetData(new wxBitmapDataObject(wxBitmap(VideoContext::Get()->GetFrame(currentFrame,true).GetImage(),24)));
wxTheClipboard->Close();
}
}
void VideoDisplay::OnSaveSnapshot(wxCommandEvent &) {
VideoContext::Get()->SaveSnapshot(false);
}
void VideoDisplay::OnSaveSnapshotRaw(wxCommandEvent &) {
VideoContext::Get()->SaveSnapshot(true);
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}
void VideoDisplay::OnCopyCoords(wxCommandEvent &) {
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if (wxTheClipboard->Open()) {
int x = video.x;
int y = video.y;
ToScriptCoords(&x, &y);
wxTheClipboard->SetData(new wxTextDataObject(wxString::Format(L"%i,%i",x,y)));
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wxTheClipboard->Close();
}
}