Aegisub/aegisub/src/video_slider.cpp

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// Copyright (c) 2005, 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
//
// Website: http://aegisub.cellosoft.com
// Contact: mailto:zeratul@cellosoft.com
//
////////////
// Includes
#include "config.h"
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#include <wx/wxprec.h>
#include <wx/settings.h>
#include "video_slider.h"
#include "video_display.h"
#include "subs_grid.h"
#include "ass_dialogue.h"
#include "vfr.h"
#include "subs_edit_box.h"
#include "options.h"
#include "utils.h"
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///////////////
// Constructor
VideoSlider::VideoSlider (wxWindow* parent, wxWindowID id)
: wxWindow (parent,id,wxDefaultPosition,wxDefaultSize,wxWANTS_CHARS | wxFULL_REPAINT_ON_RESIZE)
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{
val = 0;
min = 0;
max = 1;
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Display = NULL;
SetClientSize(20,25);
locked = false;
SetRange(0,1);
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}
/////////////
// Get value
int VideoSlider::GetValue() {
return val;
}
/////////////
// Set value
void VideoSlider::SetValue(int value) {
if (locked) return;
val = value;
if (val < min) val = min;
if (val > max) val = max;
Refresh(false);
}
/////////////
// Set range
void VideoSlider::SetRange(int from,int to) {
if (from > to) from = to;
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locked = false;
min = from;
max = to;
if (val < from) val = from;
if (val > to) val = to;
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}
//////////////////
// Get value at X
int VideoSlider::GetValueAtX(int x) {
// Get dimensions
int w,h;
GetClientSize(&w,&h);
// Special case
if (w <= 10) return 0;
// Calculate
return (int64_t)(x-5)*(int64_t)(max-min)/(int64_t)(w-10)+min;
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}
//////////////////
// Get X at value
int VideoSlider::GetXAtValue(int value) {
// Get dimensions
int w,h;
GetClientSize(&w,&h);
// Special case
if (max-min <= 0) return 0;
// Calculate
return (int64_t)(value-min)*(int64_t)(w-10)/(int64_t)(max-min)+5;
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}
/////////////////////
// Next frame hotkey
void VideoSlider::NextFrame() {
if (VideoContext::Get()->IsPlaying()) return;
//don't request out of range frames
if (GetValue() < max) VideoContext::Get()->JumpToFrame(GetValue()+1);
Refresh(false);
Update();
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}
/////////////////////////
// Previous frame hotkey
void VideoSlider::PrevFrame() {
if (VideoContext::Get()->IsPlaying()) return;
//don't request out of range frames
if (GetValue() > min) VideoContext::Get()->JumpToFrame(GetValue()-1);
Refresh(false);
Update();
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}
///////////////
// Event table
BEGIN_EVENT_TABLE(VideoSlider, wxWindow)
EVT_MOUSE_EVENTS(VideoSlider::OnMouse)
EVT_KEY_DOWN(VideoSlider::OnKeyDown)
EVT_PAINT(VideoSlider::OnPaint)
EVT_SET_FOCUS(VideoSlider::OnFocus)
EVT_KILL_FOCUS(VideoSlider::OnFocus)
EVT_ERASE_BACKGROUND(VideoSlider::OnEraseBackground)
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END_EVENT_TABLE()
///////////////////
// Change position
void VideoSlider::UpdateVideo() {
if (Display) {
if (VideoContext::Get()->IsPlaying()) return;
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locked = true;
VideoContext::Get()->JumpToFrame(GetValue());
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locked = false;
}
}
////////////////
// Mouse events
void VideoSlider::OnMouse(wxMouseEvent &event) {
// Coordinates
int x = event.GetX();
//int y = event.GetY();
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bool shift = event.m_shiftDown;
// Left click
if (event.ButtonIsDown(wxMOUSE_BTN_LEFT)) {
// Check if it's OK to drag
bool canDrag = wxWindow::FindFocus() == this;
if (!canDrag) {
int tolerance = 4;
int curX = GetXAtValue(GetValue());
if (x-curX < -tolerance || x-curX > tolerance) canDrag = true;
}
// Drag
if (canDrag) {
// Shift click to snap to keyframe
if (shift && Display) {
wxArrayInt KeyFrames = VideoContext::Get()->GetKeyFrames();
int keys = KeyFrames.Count();
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int clickedFrame = GetValueAtX(x);
int closest = 0;
int cur;
// Find closest
for (int i=0;i<keys;i++) {
cur = KeyFrames[i];
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if (abs(cur-clickedFrame) < abs(closest-clickedFrame)) {
closest = cur;
}
}
// Jump to frame
if (closest == GetValue()) return;
SetValue(closest);
}
// Normal click
else {
int go = GetValueAtX(x);
if (go == GetValue()) return;
SetValue(go);
}
Refresh(false);
// Playing?
if (VideoContext::Get()->IsPlaying()) {
VideoContext::Get()->Stop();
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UpdateVideo();
VideoContext::Get()->Play();
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}
else UpdateVideo();
}
// Get focus
SetFocus();
}
// Right/middle click
if (event.ButtonDown(wxMOUSE_BTN_RIGHT) || event.ButtonDown(wxMOUSE_BTN_MIDDLE)) {
SetFocus();
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}
// Something else
else if (!VideoContext::Get()->IsPlaying()) event.Skip();
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}
//////////////////
// Key down event
void VideoSlider::OnKeyDown(wxKeyEvent &event) {
if (VideoContext::Get()->IsPlaying()) return;
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// Get flags
int key = event.GetKeyCode();
#ifdef __APPLE__
bool ctrl = event.m_metaDown;
#else
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bool ctrl = event.m_controlDown;
#endif
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bool alt = event.m_altDown;
bool shift = event.m_shiftDown;
int direction = 0;
// Pick direction
if (key == WXK_LEFT) direction = -1;
else if (key == WXK_RIGHT) direction = 1;
// If a direction was actually pressed
if (direction) {
// Standard move
if (!ctrl && !shift && !alt) {
if (direction == 1) NextFrame();
else PrevFrame();
return;
}
// Fast move
if (!ctrl && !shift && alt) {
if (VideoContext::Get()->IsPlaying()) return;
int target = MID(min,GetValue() + direction * Options.AsInt(_T("Video Fast Jump Step")),max);
if (target != GetValue()) VideoContext::Get()->JumpToFrame(target);
return;
}
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// Boundaries
if (ctrl && !shift && !alt) {
// Prepare
wxArrayInt sel = grid->GetSelection();
int cur;
if (sel.Count() > 0) cur = sel[0];
else {
grid->editBox->SetToLine(0);
grid->SelectRow(0);
cur = 0;
}
AssDialogue *curDiag = grid->GetDialogue(cur);
if (!curDiag) return;
// Jump to next sub boundary
if (direction != 0) {
int target1 = VFR_Output.GetFrameAtTime(curDiag->Start.GetMS(),true);
int target2 = VFR_Output.GetFrameAtTime(curDiag->End.GetMS(),false);
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bool drawn = false;
// Forward
if (direction == 1) {
if (VideoContext::Get()->GetFrameN() < target1) VideoContext::Get()->JumpToFrame(target1);
else if (VideoContext::Get()->GetFrameN() < target2) VideoContext::Get()->JumpToFrame(target2);
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else {
if (cur+1 >= grid->GetRows()) return;
grid->editBox->SetToLine(cur+1);
grid->SelectRow(cur+1);
grid->MakeCellVisible(cur+1,0);
grid->SetVideoToSubs(true);
grid->Refresh(false);
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drawn = true;
}
return;
}
// Backward
else {
if (VideoContext::Get()->GetFrameN() > target2) VideoContext::Get()->JumpToFrame(target2);
else if (VideoContext::Get()->GetFrameN() > target1) VideoContext::Get()->JumpToFrame(target1);
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else {
if (cur-1 < 0) return;
grid->editBox->SetToLine(cur-1);
grid->SelectRow(cur-1);
grid->MakeCellVisible(cur-1,0);
grid->SetVideoToSubs(false);
grid->Refresh(false);
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drawn = true;
}
return;
}
}
}
// Snap to keyframe
if (shift && !ctrl && !alt) {
if (direction != 0) {
// Prepare
int prevKey = 0;
int nextKey = VideoContext::Get()->GetLength()-1;
wxArrayInt KeyFrames = VideoContext::Get()->GetKeyFrames();
int keys = KeyFrames.Count();
int cur = VideoContext::Get()->GetFrameN();
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int i;
int temp;
// Find previous keyframe
// This algorithm does unnecessary loops, but it ensures it works even if keyframes are out of order.
for (i=0;i<keys;i++) {
temp = KeyFrames[i];
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if (temp < cur && temp > prevKey) prevKey = temp;
}
// Find next keyframe
for (i=0;i<keys;i++) {
temp = KeyFrames[i];
if (temp > cur && temp < nextKey) nextKey = KeyFrames[i];
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}
if (direction == -1) VideoContext::Get()->JumpToFrame(prevKey);
if (direction == 1) VideoContext::Get()->JumpToFrame(nextKey);
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return;
}
}
}
// Forward up/down to grid
if (key == WXK_UP || key == WXK_DOWN) {
#if wxCHECK_VERSION(2,9,0)
grid->GetEventHandler()->ProcessEvent(event);
#else
grid->AddPendingEvent(event);
#endif
grid->SetFocus();
return;
}
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event.Skip();
}
///////////////
// Paint event
void VideoSlider::OnPaint(wxPaintEvent &event) {
wxPaintDC dc(this);
DrawImage(dc);
}
//////////////
// Draw image
void VideoSlider::DrawImage(wxDC &destdc) {
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// Get dimensions
int w,h;
GetClientSize(&w,&h);
// Back buffer
wxMemoryDC dc;
wxBitmap bmp(w,h);
dc.SelectObject(bmp);
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// Colors
wxColour shad = wxSystemSettings::GetColour(wxSYS_COLOUR_3DDKSHADOW);
wxColour high = wxSystemSettings::GetColour(wxSYS_COLOUR_3DLIGHT);
wxColour face = wxSystemSettings::GetColour(wxSYS_COLOUR_3DFACE);
wxColour sel(123,251,232);
wxColour notSel(sel.Red()*2/5,sel.Green()*2/5,sel.Blue()*2/5);
wxColour bord(0,0,0);
int x1,x2,y1,y2;
// Background
dc.SetPen(*wxTRANSPARENT_PEN);
dc.SetBrush(face);
dc.DrawRectangle(0,0,w,h);
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// Selection border
bool selected = wxWindow::FindFocus() == this;
if (selected) {
dc.SetBrush(*wxTRANSPARENT_BRUSH);
dc.SetPen(wxPen(shad,1,wxDOT));
dc.DrawRectangle(0,0,w,h);
}
// Draw slider
x1 = 5;
x2 = w-5;
y1 = 8;
y2 = h-8;
dc.SetPen(wxPen(shad));
dc.DrawLine(x1,y1,x2,y1);
dc.DrawLine(x1,y1,x1,y2);
dc.SetPen(wxPen(high));
dc.DrawLine(x1,y2,x2,y2);
dc.DrawLine(x2,y1,x2,y2);
// Draw keyframes
int curX;
if (Display && Options.AsBool(_T("Show keyframes on video slider"))) {
dc.SetPen(wxPen(shad));
wxArrayInt KeyFrames = VideoContext::Get()->GetKeyFrames();
int keys = KeyFrames.Count();
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for (int i=0;i<keys;i++) {
curX = GetXAtValue(KeyFrames[i]);
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dc.DrawLine(curX,2,curX,8);
}
}
// Draw cursor
curX = GetXAtValue(GetValue());
// Fill bg
dc.SetBrush(wxBrush(face));
dc.SetPen(*wxTRANSPARENT_PEN);
dc.DrawRectangle(curX-2,y1-1,4,y2-y1+5);
dc.SetBrush(wxNullBrush);
// Draw cursor highlights
dc.SetPen(wxPen(high));
dc.DrawLine(curX,y1-2,curX-4,y1+2);
dc.DrawLine(curX-3,y1+2,curX-3,y2+5);
// Draw cursor shades
dc.SetPen(wxPen(shad));
dc.DrawLine(curX+1,y1-1,curX+4,y1+2);
dc.DrawLine(curX+3,y1+2,curX+3,y2+5);
dc.DrawLine(curX-3,y2+4,curX+3,y2+4);
// Draw cursor outline
dc.SetPen(wxPen(bord));
dc.DrawLine(curX,y1-3,curX-4,y1+1);
dc.DrawLine(curX,y1-3,curX+4,y1+1);
dc.DrawLine(curX-4,y1+1,curX-4,y2+5);
dc.DrawLine(curX+4,y1+1,curX+4,y2+5);
dc.DrawLine(curX-3,y2+5,curX+4,y2+5);
dc.DrawLine(curX-3,y2,curX+4,y2);
// Draw selection
dc.SetPen(*wxTRANSPARENT_PEN);
if (selected) dc.SetBrush(wxBrush(sel));
else dc.SetBrush(wxBrush(notSel));
dc.DrawRectangle(curX-3,y2+1,7,4);
// Draw final
destdc.Blit(0,0,w,h,&dc,0,0);
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}
////////////////
// Update image
void VideoSlider::UpdateImage () {
//wxClientDC dc(this);
//DrawImage(dc);
Refresh(false);
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}
////////////////
// Focus change
void VideoSlider::OnFocus(wxFocusEvent &event) {
Refresh(false);
}