Aegisub/aegisub/src/subs_preview.cpp

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// Copyright (c) 2007, Rodrigo Braz Monteiro
// 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/
//
// $Id$
/// @file subs_preview.cpp
/// @brief Preview control using a dummy video provider and subtitles provider to render a preview
/// @ingroup custom_control
///
////////////
// Includes
#include "config.h"
#include <wx/msgdlg.h>
#include <wx/dcclient.h>
#include <wx/dcmemory.h>
#include "ass_style.h"
#include "subs_preview.h"
#include "video_provider_dummy.h"
#include "subtitles_provider_manager.h"
#include "ass_file.h"
/// @brief Constructor
/// @param parent
/// @param id
/// @param pos
/// @param size
/// @param winStyle
/// @param col
///
SubtitlesPreview::SubtitlesPreview(wxWindow *parent,int id,wxPoint pos,wxSize size,int winStyle,wxColour col)
: wxWindow(parent,id,pos,size,winStyle)
{
AssStyle temp;
bmp = NULL;
style = NULL;
vid = NULL;
SetStyle(&temp);
SetText(_T("preview"));
SetSizeHints(size.GetWidth(),size.GetHeight(),-1,-1);
backColour = col;
}
/// @brief Destructor
///
SubtitlesPreview::~SubtitlesPreview() {
delete bmp;
bmp = NULL;
delete style;
style = NULL;
delete vid;
vid = NULL;
}
/// @brief Set style
/// @param _style
/// @return
///
void SubtitlesPreview::SetStyle(AssStyle *_style) {
// Prepare style
AssStyle *tmpStyle = AssEntry::GetAsStyle(_style->Clone());
tmpStyle->name = _T("Preview");
tmpStyle->alignment = 5;
for (int i=0;i<4;i++) tmpStyle->Margin[i] = 0;
tmpStyle->UpdateData();
// See if it's any different from the current
if (style) {
if (tmpStyle->IsEqualTo(style)) {
delete tmpStyle;
return;
}
delete style;
}
// Update
style = tmpStyle;
UpdateBitmap();
}
/// @brief Set text
/// @param text
///
void SubtitlesPreview::SetText(wxString text) {
if (text != showText) {
showText = text;
UpdateBitmap();
}
}
/// @brief Update image
/// @param w
/// @param h
/// @return
///
void SubtitlesPreview::UpdateBitmap(int w,int h) {
// Visible?
if (!IsShownOnScreen()) return;
// Get size
if (w == -1) {
w = GetClientSize().GetWidth();
h = GetClientSize().GetHeight();
}
// Delete old bmp if needed
if (bmp) {
if (bmp->GetWidth() != w || bmp->GetHeight() != h) {
delete bmp;
bmp = NULL;
}
}
// Create bitmap
if (!bmp) {
bmp = new wxBitmap(w,h,-1);
}
// Get AegiVideoFrame
if (!vid) vid = new DummyVideoProvider(0.0,10,w,h,backColour,true);
AegiVideoFrame frame;
frame.CopyFrom(vid->GetFrame(0));
// Try to get subtitles provider
SubtitlesProvider *provider = NULL;
try {
provider = SubtitlesProviderFactoryManager::GetProvider();
}
catch (...) {
wxMessageBox(_T("Could not get any subtitles provider for the preview box. Make sure that you have a provider installed."),_T("No subtitles provider"),wxICON_ERROR|wxOK);
}
// Provider OK
if (provider) {
// Generate subtitles
AssFile *subs = new AssFile();
subs->LoadDefault();
int ver = 1;
wxString outGroup;
subs->InsertStyle((AssStyle *)style->Clone());
subs->SetScriptInfo(_T("PlayResX"),wxString::Format(_T("%i"),w));
subs->SetScriptInfo(_T("PlayResY"),wxString::Format(_T("%i"),h));
subs->AddLine(_T("Dialogue: 0,0:00:00.00,0:00:05.00,Preview,,0000,0000,0000,,{\\q2}") + showText,_T("[Events]"),0,ver,&outGroup);
// Apply subtitles
try {
provider->LoadSubtitles(subs);
provider->DrawSubtitles(frame,0.1);
}
catch (...) {}
delete provider;
}
// Convert frame to bitmap
wxMemoryDC dc(*bmp);
wxBitmap tempBmp(frame.GetImage());
frame.Clear();
dc.DrawBitmap(tempBmp,0,0);
Refresh();
}
///////////////
// Event table
BEGIN_EVENT_TABLE(SubtitlesPreview,wxWindow)
EVT_PAINT(SubtitlesPreview::OnPaint)
EVT_SIZE(SubtitlesPreview::OnSize)
END_EVENT_TABLE()
/// @brief Paint event
/// @param event
///
void SubtitlesPreview::OnPaint(wxPaintEvent &event) {
wxPaintDC dc(this);
if (!bmp) UpdateBitmap();
if (bmp) dc.DrawBitmap(*bmp,0,0);
}
/// @brief Size event
/// @param event
///
void SubtitlesPreview::OnSize(wxSizeEvent &event) {
delete vid;
vid = NULL;
UpdateBitmap(event.GetSize().GetWidth(),event.GetSize().GetHeight());
}
/// @brief Set colour
/// @param col
///
void SubtitlesPreview::SetColour(wxColour col) {
backColour = col;
delete vid;
vid = NULL;
UpdateBitmap();
}