152 lines
4.3 KiB
C++
152 lines
4.3 KiB
C++
#include "effects.h"
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#include <QGridLayout>
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#include <QLabel>
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#include <QOpenGLTexture>
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#include <QTextEdit>
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#include <QPainter>
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#include <QPushButton>
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#include <QColorDialog>
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#include <QDebug>
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#include "ui/labelslider.h"
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#include "ui/collapsiblewidget.h"
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#include "project/clip.h"
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#include "project/sequence.h"
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TextEffect::TextEffect(Clip *c) : Effect(c), texture(NULL) {
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setup_effect(EFFECT_TYPE_VIDEO, VIDEO_TEXT_EFFECT);
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QGridLayout* ui_layout = new QGridLayout();
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ui_layout->addWidget(new QLabel("Text:"), 0, 0);
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text_val = new QTextEdit();
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ui_layout->addWidget(text_val, 0, 1);
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ui_layout->addWidget(new QLabel("Size:"), 1, 0);
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size_val = new LabelSlider();
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size_val->set_minimum_value(0);
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ui_layout->addWidget(size_val, 1, 1);
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ui_layout->addWidget(new QLabel("Color:"), 2, 0);
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set_color_button = new QPushButton();
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ui_layout->addWidget(set_color_button, 2, 1);
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ui->setLayout(ui_layout);
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container->setContents(ui);
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color = Qt::white;
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set_button_color();
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connect(text_val, SIGNAL(textChanged()), this, SLOT(update_texture()));
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connect(size_val, SIGNAL(valueChanged()), this, SLOT(update_texture()));
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connect(set_color_button, SIGNAL(clicked(bool)), this, SLOT(set_color()));
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size_val->set_value(24);
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text_val->setText("Sample Text");
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}
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TextEffect::~TextEffect() {
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texture->destroy();
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delete texture;
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}
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void TextEffect::set_button_color() {
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QPalette pal = set_color_button->palette();
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pal.setColor(QPalette::Button, color);
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set_color_button->setPalette(pal);
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}
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void TextEffect::set_color() {
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color = QColorDialog::getColor(color, NULL);
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set_button_color();
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update_texture();
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}
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void TextEffect::update_texture() {
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pixmap = QPixmap(parent_clip->sequence->width, parent_clip->sequence->height);
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pixmap.fill(Qt::transparent);
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QPainter p(&pixmap);
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p.setRenderHint(QPainter::TextAntialiasing, true);
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// set font
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QFont font = p.font();
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font.setPointSize(size_val->value());
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p.setFont(font);
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p.setPen(color);
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p.drawText(QRect(0, 0, pixmap.width(), pixmap.height()), Qt::AlignCenter | Qt::TextWordWrap, text_val->toPlainText());
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if (texture == NULL) {
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texture = new QOpenGLTexture(pixmap.toImage());
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} else {
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texture->destroy();
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texture->setData(pixmap.toImage());
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}
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// queue a repaint of the canvas
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field_changed();
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}
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void TextEffect::post_gl() {
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if (texture != NULL) {
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texture->bind();
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int half_width = pixmap.width()/2;
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int half_height = pixmap.height()/2;
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glBegin(GL_QUADS);
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glTexCoord2f(0.0, 0.0);
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glVertex2f(-half_width, -half_height);
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glTexCoord2f(1.0, 0.0);
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glVertex2f(half_width, -half_height);
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glTexCoord2f(1.0, 1.0);
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glVertex2f(half_width, half_height);
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glTexCoord2f(0.0, 1.0);
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glVertex2f(-half_width, half_height);
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glEnd();
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texture->release();
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}
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}
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Effect* TextEffect::copy(Clip* c) {
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TextEffect* e = new TextEffect(c);
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e->text_val->setPlainText(text_val->toPlainText());
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e->size_val->set_value(size_val->value());
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e->color = color;
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return e;
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}
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void TextEffect::load(QXmlStreamReader* stream) {
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const QXmlStreamAttributes& attr = stream->attributes();
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for (int i=0;i<attr.size();i++) {
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const QXmlStreamAttribute& a = attr.at(i);
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if (a.name() == "size") {
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size_val->set_value(a.value().toDouble());
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} else if (a.name() == "r") {
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color.setRed(a.value().toInt());
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} else if (a.name() == "g") {
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color.setGreen(a.value().toInt());
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} else if (a.name() == "b") {
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color.setBlue(a.value().toInt());
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}
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}
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while (!(stream->name() == "effect" && stream->isEndElement())) {
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stream->readNext();
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if (stream->name() == "text" && stream->isStartElement()) {
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text_val->setPlainText(stream->text().toString());
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}
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}
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}
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void TextEffect::save(QXmlStreamWriter* stream) {
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stream->writeAttribute("size", QString::number(size_val->value()));
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stream->writeAttribute("r", QString::number(color.red()));
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stream->writeAttribute("g", QString::number(color.green()));
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stream->writeAttribute("b", QString::number(color.blue()));
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stream->writeTextElement("text", text_val->toPlainText());
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}
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