/***
Olive - Non-Linear Video Editor
Copyright (C) 2019 Olive Team
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see .
***/
#include "richtexteffect.h"
#include
#include
#include "timeline/clip.h"
#include "ui/blur.h"
enum AutoscrollDirection {
SCROLL_OFF,
SCROLL_UP,
SCROLL_DOWN,
SCROLL_LEFT,
SCROLL_RIGHT,
};
RichTextEffect::RichTextEffect(Clip *c) :
OldEffectNode(c)
{
SetFlags(OldEffectNode::SuperimposeFlag);
text_val = new StringInput(this, "text", tr("Text"));
padding_field = new DoubleInput(this, "padding", tr("Padding"));
position = new Vec2Input(this, "pos", tr("Position"));
vertical_align = new ComboInput(this, "valign", tr("Vertical Align:"));
vertical_align->AddItem(tr("Top"), Qt::AlignTop);
vertical_align->AddItem(tr("Center"), Qt::AlignCenter);
vertical_align->AddItem(tr("Bottom"), Qt::AlignBottom);
vertical_align->SetValueAt(0, Qt::AlignCenter);
autoscroll = new ComboInput(this, "autoscroll", tr("Auto-Scroll"));
autoscroll->AddItem(tr("Off"), SCROLL_OFF);
autoscroll->AddItem(tr("Up"), SCROLL_UP);
autoscroll->AddItem(tr("Down"), SCROLL_DOWN);
autoscroll->AddItem(tr("Left"), SCROLL_LEFT);
autoscroll->AddItem(tr("Right"), SCROLL_RIGHT);
shadow_bool = new BoolInput(this, "shadow", tr("Shadow"));
shadow_color = new ColorInput(this, "shadowcolor", tr("Shadow Color"));
shadow_angle = new DoubleInput(this, "shadowangle", tr("Shadow Angle"));
shadow_distance = new DoubleInput(this, "shadowdistance", tr("Shadow Distance"));
shadow_distance->SetMinimum(0);
shadow_softness = new DoubleInput(this, "shadowsoftness", tr("Shadow Softness"));
shadow_softness->SetMinimum(0);
shadow_opacity = new DoubleInput(this, "shadowopacity", tr("Shadow Opacity"));
shadow_opacity->SetMinimum(0);
shadow_opacity->SetMaximum(100);
// Create default text
text_val->SetValueAt(0, ""
""
"Sample Text"
""
"");
}
QString RichTextEffect::name()
{
return tr("Rich Text");
}
QString RichTextEffect::id()
{
return "org.olivevideoeditor.Olive.richtext";
}
QString RichTextEffect::category()
{
return tr("Render");
}
QString RichTextEffect::description()
{
return tr("Render formatted rich text over a clip.");
}
EffectType RichTextEffect::type()
{
return EFFECT_TYPE_EFFECT;
}
olive::TrackType RichTextEffect::subtype()
{
return olive::kTypeVideo;
}
OldEffectNodePtr RichTextEffect::Create(Clip *c)
{
return std::make_shared(c);
}
void RichTextEffect::redraw(double timecode)
{
QPainter p(&img);
p.setRenderHint(QPainter::Antialiasing);
int width = img.width();
int height = img.height();
int padding = qRound(padding_field->GetDoubleAt(timecode));
width -= 2 * padding;
height -= 2 * padding;
QTextDocument td;
td.setHtml(text_val->GetStringAt(timecode));
td.setTextWidth(width);
QPoint translation = position->GetVector2DAt(timecode).toPoint();
translation += {padding, padding};
int doc_height = qRound(td.size().height());
AutoscrollDirection auto_scroll_dir = static_cast(autoscroll->GetValueAt(timecode).toInt());
double scroll_progress = 0;
if (auto_scroll_dir != SCROLL_OFF) {
double clip_length_secs = double(parent_clip->length()) / parent_clip->media_frame_rate();
scroll_progress = (timecode - double(parent_clip->clip_in()) / parent_clip->media_frame_rate()) / clip_length_secs;
}
if (auto_scroll_dir == SCROLL_OFF || auto_scroll_dir == SCROLL_LEFT || auto_scroll_dir == SCROLL_RIGHT) {
// If we're not auto-scrolling the vertical direction, respect the vertical alignment
if (vertical_align->GetValueAt(timecode).toInt() == Qt::AlignCenter) {
translation.setY(translation.y() + height / 2 - doc_height / 2);
} else if (vertical_align->GetValueAt(timecode).toInt() == Qt::AlignBottom) {
translation.setY(translation.y() + height - doc_height);
}
// Check if we are autoscrolling
if (auto_scroll_dir != SCROLL_OFF) {
if (auto_scroll_dir == SCROLL_LEFT) {
scroll_progress = 1.0 - scroll_progress;
}
int doc_width = qRound(td.size().width());
translation.setX(translation.x() + qRound(-doc_width + (img.width() + doc_width) * scroll_progress));
}
} else if (auto_scroll_dir == SCROLL_UP || auto_scroll_dir == SCROLL_DOWN) {
// Auto-scroll bottom to top or top to bottom
if (auto_scroll_dir == SCROLL_UP) {
scroll_progress = 1.0 - scroll_progress;
}
translation.setY(translation.y() + qRound(-doc_height + (img.height() + doc_height)*scroll_progress));
}
QRect clip_rect = img.rect();
clip_rect.translate(-translation);
p.translate(translation);
img.fill(Qt::transparent);
// draw software shadow
if (shadow_bool->GetBoolAt(timecode)) {
// calculate offset using distance and angle
double angle = shadow_angle->GetDoubleAt(timecode) * M_PI / 180.0;
double distance = qFloor(shadow_distance->GetDoubleAt(timecode));
int shadow_x_offset = qRound(qCos(angle) * distance);
int shadow_y_offset = qRound(qSin(angle) * distance);
p.translate(shadow_x_offset, shadow_y_offset);
clip_rect.translate(-shadow_x_offset, -shadow_y_offset);
td.drawContents(&p, clip_rect);
int blurSoftness = qFloor(shadow_softness->GetDoubleAt(timecode));
if (blurSoftness > 0) {
olive::ui::blur(img, img.rect(), blurSoftness, true);
}
p.setCompositionMode(QPainter::CompositionMode_SourceIn);
p.fillRect(clip_rect, shadow_color->GetColorAt(timecode));
p.setCompositionMode(QPainter::CompositionMode_SourceOver);
p.translate(-shadow_x_offset, -shadow_y_offset);
clip_rect.translate(shadow_x_offset, shadow_y_offset);
}
td.drawContents(&p, clip_rect);
p.end();
}
bool RichTextEffect::AlwaysUpdate()
{
return autoscroll->GetValueAt(Now()).toInt() != SCROLL_OFF;
}