Aegisub/src/audio_karaoke.cpp

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// Copyright (c) 2013, Thomas Goyne <plorkyeran@aegisub.org>
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//
// Permission to use, copy, modify, and distribute this software for any
// purpose with or without fee is hereby granted, provided that the above
// copyright notice and this permission notice appear in all copies.
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//
// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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//
// Aegisub Project http://www.aegisub.org/
/// @file audio_karaoke.cpp
/// @brief Karaoke table UI in audio box (not in audio display)
/// @ingroup audio_ui
///
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#include "config.h"
#include "audio_karaoke.h"
#include "include/aegisub/context.h"
#include "ass_dialogue.h"
#include "ass_file.h"
#include "ass_karaoke.h"
#include "audio_box.h"
#include "audio_controller.h"
#include "audio_timing.h"
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#include "compat.h"
#include "libresrc/libresrc.h"
#include "options.h"
#include "selection_controller.h"
#include "utils.h"
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#include <libaegisub/util.h>
#include <algorithm>
#include <boost/locale/boundary.hpp>
#include <numeric>
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#include <wx/bmpbuttn.h>
#include <wx/button.h>
#include <wx/dcclient.h>
#include <wx/dcmemory.h>
#include <wx/menu.h>
#include <wx/panel.h>
#include <wx/settings.h>
#include <wx/sizer.h>
template<class Container, class Value>
static inline size_t last_lt_or_eq(Container const& c, Value const& v) {
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auto it = lower_bound(c.begin(), c.end(), v);
// lower_bound gives first >=
if (it == c.end() || *it > v)
--it;
return distance(c.begin(), it);
}
AudioKaraoke::AudioKaraoke(wxWindow *parent, agi::Context *c)
: wxWindow(parent, -1, wxDefaultPosition, wxDefaultSize, wxTAB_TRAVERSAL | wxBORDER_SUNKEN)
, c(c)
, file_changed(c->ass->AddCommitListener(&AudioKaraoke::OnFileChanged, this))
, audio_opened(c->audioController->AddAudioOpenListener(&AudioKaraoke::OnAudioOpened, this))
, audio_closed(c->audioController->AddAudioCloseListener(&AudioKaraoke::OnAudioClosed, this))
, active_line_changed(c->selectionController->AddActiveLineListener(&AudioKaraoke::OnActiveLineChanged, this))
, kara(agi::util::make_unique<AssKaraoke>())
{
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using std::bind;
cancel_button = new wxBitmapButton(this, -1, GETIMAGE(kara_split_cancel_16));
cancel_button->SetToolTip(_("Discard all uncommitted splits"));
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cancel_button->Bind(wxEVT_BUTTON, bind(&AudioKaraoke::CancelSplit, this));
accept_button = new wxBitmapButton(this, -1, GETIMAGE(kara_split_accept_16));
accept_button->SetToolTip(_("Commit splits"));
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accept_button->Bind(wxEVT_BUTTON, bind(&AudioKaraoke::AcceptSplit, this));
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split_area = new wxPanel(this);
wxSizer *main_sizer = new wxBoxSizer(wxHORIZONTAL);
main_sizer->Add(cancel_button);
main_sizer->Add(accept_button);
main_sizer->Add(split_area, wxSizerFlags(1).Expand());
SetSizerAndFit(main_sizer);
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/// @todo subscribe
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split_font.SetFaceName(FontFace("Audio/Karaoke"));
split_font.SetPointSize(OPT_GET("Audio/Karaoke/Font Size")->GetInt());
split_area->Bind(wxEVT_SIZE, &AudioKaraoke::OnSize, this);
split_area->Bind(wxEVT_PAINT, &AudioKaraoke::OnPaint, this);
split_area->Bind(wxEVT_LEFT_DOWN, &AudioKaraoke::OnMouse, this);
split_area->Bind(wxEVT_LEFT_UP, &AudioKaraoke::OnMouse, this);
split_area->Bind(wxEVT_MOTION, &AudioKaraoke::OnMouse, this);
split_area->Bind(wxEVT_LEAVE_WINDOW, &AudioKaraoke::OnMouse, this);
split_area->Bind(wxEVT_CONTEXT_MENU, &AudioKaraoke::OnContextMenu, this);
scroll_timer.Bind(wxEVT_TIMER, &AudioKaraoke::OnScrollTimer, this);
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accept_button->Enable(false);
cancel_button->Enable(false);
enabled = false;
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}
AudioKaraoke::~AudioKaraoke() {
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}
void AudioKaraoke::OnActiveLineChanged(AssDialogue *new_line) {
active_line = new_line;
if (enabled) {
LoadFromLine();
split_area->Refresh(false);
}
}
void AudioKaraoke::OnFileChanged(int type, std::set<const AssEntry *> const& changed) {
if (enabled && (type & AssFile::COMMIT_DIAG_FULL) && (changed.empty() || changed.count(active_line))) {
LoadFromLine();
split_area->Refresh(false);
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}
}
void AudioKaraoke::OnAudioOpened() {
SetEnabled(enabled);
}
void AudioKaraoke::OnAudioClosed() {
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c->audioController->SetTimingController(nullptr);
}
void AudioKaraoke::SetEnabled(bool en) {
enabled = en;
c->audioBox->ShowKaraokeBar(enabled);
if (enabled) {
LoadFromLine();
c->audioController->SetTimingController(CreateKaraokeTimingController(c, kara.get(), file_changed));
Refresh(false);
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}
else {
c->audioController->SetTimingController(CreateDialogueTimingController(c));
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}
}
void AudioKaraoke::OnSize(wxSizeEvent &evt) {
RenderText();
Refresh(false);
}
void AudioKaraoke::OnPaint(wxPaintEvent &) {
int w, h;
split_area->GetClientSize(&w, &h);
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wxPaintDC dc(split_area);
wxMemoryDC bmp_dc(rendered_line);
// Draw the text and split lines
dc.Blit(-scroll_x, 0, rendered_line.GetWidth(), h, &bmp_dc, 0, 0);
// Draw the split line under the mouse
if (click_will_remove_split)
dc.SetPen(*wxRED);
else
dc.SetPen(wxSystemSettings::GetColour(wxSYS_COLOUR_HIGHLIGHT));
dc.DrawLine(mouse_pos, 0, mouse_pos, h);
dc.SetPen(*wxTRANSPARENT_PEN);
int width_past_bmp = w + scroll_x - rendered_line.GetWidth();
dc.SetBrush(*wxWHITE_BRUSH);
if (width_past_bmp > 0)
dc.DrawRectangle(w - width_past_bmp, 0, width_past_bmp, h);
// Draw scroll arrows if needed
if (scroll_x > 0) {
dc.DrawRectangle(0, 0, 20, h);
wxPoint triangle[] = {
wxPoint(10, h / 2 - 6),
wxPoint(4, h / 2),
wxPoint(10, h / 2 + 6)
};
dc.SetBrush(*wxBLACK_BRUSH);
dc.DrawPolygon(3, triangle);
}
if (rendered_line.GetWidth() - scroll_x > w) {
dc.SetBrush(*wxWHITE_BRUSH);
dc.DrawRectangle(w - 20, 0, 20, h);
wxPoint triangle[] = {
wxPoint(w - 10, h / 2 - 6),
wxPoint(w - 4, h / 2),
wxPoint(w - 10, h / 2 + 6)
};
dc.SetBrush(*wxBLACK_BRUSH);
dc.DrawPolygon(3, triangle);
}
}
void AudioKaraoke::RenderText() {
wxSize bmp_size = split_area->GetClientSize();
int line_width = spaced_text.size() * char_width + 5;
if (line_width > bmp_size.GetWidth())
bmp_size.SetWidth(line_width);
if (!rendered_line.IsOk() || bmp_size != rendered_line.GetSize())
rendered_line = wxBitmap(bmp_size);
wxMemoryDC dc(rendered_line);
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// Draw background
dc.SetBrush(wxBrush(wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW)));
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dc.SetPen(*wxTRANSPARENT_PEN);
dc.DrawRectangle(wxPoint(), bmp_size);
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dc.SetFont(split_font);
dc.SetTextForeground(wxColour(wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOWTEXT)));
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// Draw each character in the line
int y = (bmp_size.GetHeight() - char_height) / 2;
for (size_t i = 0; i < spaced_text.size(); ++i)
dc.DrawText(spaced_text[i], char_x[i], y);
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// Draw the lines between each syllable
dc.SetPen(wxSystemSettings::GetColour(wxSYS_COLOUR_HIGHLIGHT));
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for (auto syl_line : syl_lines)
dc.DrawLine(syl_line, 0, syl_line, bmp_size.GetHeight());
}
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void AudioKaraoke::AddMenuItem(wxMenu &menu, std::string const& tag, wxString const& help, std::string const& selected) {
wxMenuItem *item = menu.AppendCheckItem(-1, to_wx(tag), help);
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menu.Bind(wxEVT_MENU, std::bind(&AudioKaraoke::SetTagType, this, tag), item->GetId());
item->Check(tag == selected);
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}
void AudioKaraoke::OnContextMenu(wxContextMenuEvent&) {
if (!enabled) return;
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wxMenu context_menu(_("Karaoke tag"));
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std::string type = kara->GetTagType();
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AddMenuItem(context_menu, "\\k", _("Change karaoke tag to \\k"), type);
AddMenuItem(context_menu, "\\kf", _("Change karaoke tag to \\kf"), type);
AddMenuItem(context_menu, "\\ko", _("Change karaoke tag to \\ko"), type);
PopupMenu(&context_menu);
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}
void AudioKaraoke::OnMouse(wxMouseEvent &event) {
if (!enabled) return;
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mouse_pos = event.GetX();
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if (event.Leaving()) {
mouse_pos = -1;
split_area->Refresh(false);
return;
}
if (scroll_timer.IsRunning() || split_area->HasCapture()) {
if (event.LeftUp()) {
scroll_timer.Stop();
split_area->ReleaseMouse();
}
return;
}
// Check if the mouse is over a scroll arrow
int client_width = split_area->GetClientSize().GetWidth();
if (scroll_x > 0 && mouse_pos < 20)
scroll_dir = -1;
else if (scroll_x + client_width < rendered_line.GetWidth() && mouse_pos > client_width - 20)
scroll_dir = 1;
else
scroll_dir = 0;
if (scroll_dir) {
mouse_pos = -1;
if (event.LeftDown()) {
split_area->Refresh(false);
scroll_timer.Start(50);
split_area->CaptureMouse();
wxTimerEvent evt;
OnScrollTimer(evt);
}
return;
}
int shifted_pos = mouse_pos + scroll_x;
// Character to insert the new split point before
int split_pos = std::min<int>((shifted_pos + char_width / 2) / char_width, spaced_text.size());
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// Syllable this character is in
int syl = last_lt_or_eq(syl_start_points, split_pos);
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// If the click is sufficiently close to a line of a syllable split,
// remove that split rather than adding a new one
bool click_right = (syl > 0 && shifted_pos <= syl_lines[syl - 1] + 3);
bool click_left = (syl < (int)syl_lines.size() && shifted_pos >= syl_lines[syl] - 3);
click_will_remove_split = click_left || click_right;
if (!event.LeftDown()) {
// Erase the old line and draw the new one
split_area->Refresh(false);
return;
}
if (click_will_remove_split)
kara->RemoveSplit(syl + (click_left && !click_right));
else
kara->AddSplit(syl, char_to_byte[split_pos] - 1);
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SetDisplayText();
accept_button->Enable(true);
cancel_button->Enable(true);
split_area->Refresh(false);
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}
void AudioKaraoke::OnScrollTimer(wxTimerEvent &) {
scroll_x += scroll_dir * char_width * 3;
int max_scroll = rendered_line.GetWidth() + 20 - split_area->GetClientSize().GetWidth();
if (scroll_x < 0 || scroll_x > max_scroll) {
scroll_x = mid(0, scroll_x, max_scroll);
scroll_timer.Stop();
}
split_area->Refresh(false);
}
void AudioKaraoke::LoadFromLine() {
scroll_x = 0;
scroll_timer.Stop();
kara->SetLine(active_line, true);
SetDisplayText();
accept_button->Enable(kara->GetText() != active_line->Text);
cancel_button->Enable(false);
}
void AudioKaraoke::SetDisplayText() {
using namespace boost::locale::boundary;
wxMemoryDC dc;
dc.SetFont(split_font);
auto get_char_width = [&](std::string const& character) -> int {
const auto it = char_widths.find(character);
if (it != end(char_widths))
return it->second;
const auto size = dc.GetTextExtent(to_wx(character));
char_height = std::max(char_height, size.GetHeight());
char_widths[character] = size.GetWidth();
return size.GetWidth();
};
char_width = get_char_width(" ");
// Width in pixels of each character in this string
std::vector<int> str_char_widths;
spaced_text.clear();
char_to_byte.clear();
syl_start_points.clear();
for (auto const& syl : *kara) {
// The last (and only the last) syllable needs the width of the final
// character in the syllable, so we unconditionally add it at the end
// of this loop, then remove the extra ones here
if (!char_to_byte.empty())
char_to_byte.pop_back();
syl_start_points.push_back(spaced_text.size());
// Add a space between each syllable to avoid crowding
spaced_text.emplace_back(wxS(" "));
str_char_widths.push_back(char_width);
char_to_byte.push_back(1);
size_t syl_idx = 1;
const ssegment_index characters(character, begin(syl.text), end(syl.text));
for (auto chr : characters) {
// Calculate the width in pixels of this character
const std::string character = chr.str();
const int width = get_char_width(character);
char_width = std::max(char_width, width);
str_char_widths.push_back(width);
spaced_text.emplace_back(to_wx(character));
char_to_byte.push_back(syl_idx);
syl_idx += character.size();
}
char_to_byte.push_back(syl_idx);
}
// Center each character within the space available to it
char_x.resize(str_char_widths.size());
for (size_t i = 0; i < str_char_widths.size(); ++i)
char_x[i] = i * char_width + (char_width - str_char_widths[i]) / 2;
// Calculate the positions of the syllable divider lines
syl_lines.resize(syl_start_points.size() - 1);
for (size_t i = 1; i < syl_start_points.size(); ++i)
syl_lines[i - 1] = syl_start_points[i] * char_width + char_width / 2;
RenderText();
}
void AudioKaraoke::CancelSplit() {
LoadFromLine();
split_area->Refresh(false);
}
void AudioKaraoke::AcceptSplit() {
active_line->Text = kara->GetText();
file_changed.Block();
c->ass->Commit(_("karaoke split"), AssFile::COMMIT_DIAG_TEXT);
file_changed.Unblock();
accept_button->Enable(false);
cancel_button->Enable(false);
}
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void AudioKaraoke::SetTagType(std::string const& new_tag) {
kara->SetTagType(new_tag);
AcceptSplit();
}