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/
/// @file subs_preview.cpp
/// @brief Preview control using a dummy video provider and subtitles provider to render a preview
/// @ingroup custom_control
///
#include "config.h"
#include "ass_dialogue.h"
#include "ass_file.h"
#include "ass_style.h"
#include "subs_preview.h"
#include "include/aegisub/subtitles_provider.h"
#include "video_frame.h"
#include "video_provider_dummy.h"
#include <libaegisub/util.h>
#include <wx/dcclient.h>
#include <wx/msgdlg.h>
SubtitlesPreview::SubtitlesPreview(wxWindow *parent, wxSize size, int winStyle, agi::Color col)
: wxWindow(parent, -1, wxDefaultPosition, size, winStyle)
, style(new AssStyle)
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, back_color(std::move(col))
, sub_file(agi::util::make_unique<AssFile>())
, line(new AssDialogue)
{
line->Text = "{\\q2}preview";
SetStyle(*style);
sub_file->LoadDefault();
sub_file->InsertLine(style);
sub_file->Line.push_back(*line);
SetSizeHints(size.GetWidth(), size.GetHeight(), -1, -1);
wxSizeEvent evt(size);
OnSize(evt);
UpdateBitmap();
Bind(wxEVT_PAINT, &SubtitlesPreview::OnPaint, this);
Bind(wxEVT_SIZE, &SubtitlesPreview::OnSize, this);
}
SubtitlesPreview::~SubtitlesPreview() {
}
void SubtitlesPreview::SetStyle(AssStyle const& new_style) {
*style = new_style;
style->name = "Default";
style->alignment = 5;
std::fill(style->Margin.begin(), style->Margin.end(), 0);
style->UpdateData();
UpdateBitmap();
}
void SubtitlesPreview::SetText(std::string const& text) {
std::string new_text = "{\\q2}" + text;
if (new_text != line->Text) {
line->Text = new_text;
UpdateBitmap();
}
}
void SubtitlesPreview::SetColour(agi::Color col) {
if (col != back_color) {
back_color = col;
vid.reset(new DummyVideoProvider(0.0, 10, bmp->GetWidth(), bmp->GetHeight(), back_color, true));
UpdateBitmap();
}
}
void SubtitlesPreview::UpdateBitmap() {
if (!vid) return;
auto frame = vid->GetFrame(0);
if (provider) {
try {
provider->LoadSubtitles(sub_file.get());
provider->DrawSubtitles(*frame, 0.1);
}
catch (...) { }
}
// Convert frame to bitmap
*bmp = static_cast<wxBitmap>(GetImage(*frame));
Refresh();
}
void SubtitlesPreview::OnPaint(wxPaintEvent &) {
wxPaintDC(this).DrawBitmap(*bmp, 0, 0);
}
void SubtitlesPreview::OnSize(wxSizeEvent &evt) {
if (bmp.get() && evt.GetSize() == bmp->GetSize()) return;
int w = evt.GetSize().GetWidth();
int h = evt.GetSize().GetHeight();
bmp = agi::util::make_unique<wxBitmap>(w, h, -1);
vid.reset(new DummyVideoProvider(0.0, 10, w, h, back_color, true));
try {
if (!provider)
provider = SubtitlesProviderFactory::GetProvider();
}
catch (...) {
wxMessageBox(
"Could not get any subtitles provider for the preview box. Make "
"sure that you have a provider installed.",
"No subtitles provider", wxOK | wxICON_ERROR | wxCENTER);
}
sub_file->SetScriptInfo("PlayResX", std::to_string(w));
sub_file->SetScriptInfo("PlayResY", std::to_string(h));
UpdateBitmap();
}