99 lines
3.6 KiB
C++
99 lines
3.6 KiB
C++
#include "elescroll.h"
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#include "playwin.h"
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#include <QOpenGLWidget>
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#include <QPainter>
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#include <QPaintEvent>
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EleScroll::EleScroll(QWidget *parent, QString dirPre, const JValue &json, int w, int h) : QWidget{parent}, w(w), h(h) {
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img.load(dirPre + json["id"].toString());
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auto effStr = json["effect"].toString();
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if(effStr.isEmpty() || effStr=="no") return;
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auto scrollSpeed = json["scrollSpeed"].toDouble();
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if(scrollSpeed==0) {
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auto scrollDur = json["effectSpeed"].toDouble();
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if(scrollDur==0) return;
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scrollSpeed = 1000 / scrollDur;
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}
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interval = step = 1;
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if(scrollSpeed > 60) step = (int) round(scrollSpeed/60);
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else if(scrollSpeed < 60) interval = (int) round(60/scrollSpeed);
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int idx = effStr.lastIndexOf(' ');
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if(idx > -1) {
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effect = effStr.at(idx+1).toLatin1();
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if(effect=='l') end = -(img.width()-step);
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else if(effect=='r') end = img.width()-step;
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else if(effect=='t') end = -(img.height()-step);
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else if(effect=='b') end = img.height()-step;
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}
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}
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EleScroll::EleScroll(QWidget *parent, QString imgPath, char effect, double scrollSpeed) : QWidget{parent}, effect(effect) {
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img.load(imgPath);
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if(effect==0) return;
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if(scrollSpeed==0) return;
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interval = step = 1;
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if(scrollSpeed > 60) step = (int) round(scrollSpeed/60);
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else if(scrollSpeed < 60) interval = (int) round(60/scrollSpeed);
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if(effect=='l') end = -(img.width()-step);
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else if(effect=='r') end = img.width()-step;
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else if(effect=='t') end = -(img.height()-step);
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else if(effect=='b') end = img.height()-step;
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}
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void EleScroll::paintEvent(QPaintEvent *e) {
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if(img.isNull()) return;
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auto rect = e->rect();
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QPainter painter(this);
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painter.setRenderHints(QPainter::Antialiasing|QPainter::SmoothPixmapTransform);
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if(effect=='l') {
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int x = cur;
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do {
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if(x > rect.left()-img.width() && x < rect.right()+1) painter.drawPixmap(x, 0, img);
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x += img.width();
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} while(x < rect.right()+1);
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} else if(effect=='r') {
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int x = cur + w;
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boolean con1;
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do {
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x -= img.width();
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con1 = x > rect.left()-img.width();
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if(con1 && x < rect.right()+1) painter.drawPixmap(x, 0, img);
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} while(con1);
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} else if(effect=='t') {
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int y = cur;
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do {
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if(y > rect.top()-img.height() && y < rect.bottom()+1) painter.drawPixmap(0, y, img);
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y += img.height();
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} while(y < rect.bottom()+1);
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} else if(effect=='b') {
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int y = cur + h;
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boolean con1;
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do {
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y -= img.height();
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con1 = y > rect.top()-img.height();
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if(con1 && y < rect.bottom()+1) painter.drawPixmap(0, y, img);
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} while(con1);
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} else painter.drawPixmap(0, 0, img);
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if(freshCnt==0 && effect!=0 && interval!=0) connect(PlayWin::self->gl, &QOpenGLWidget::frameSwapped, this, &EleScroll::doFrame, Qt::UniqueConnection);
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}
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void EleScroll::doFrame() {
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if(! isVisible()) {
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freshCnt = cur = 0;
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disconnect(PlayWin::self->gl, &QOpenGLWidget::frameSwapped, this, &EleScroll::doFrame);
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return;
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}
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if(freshCnt < interval) freshCnt++;
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else {
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freshCnt = 1;
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if(effect=='t' || effect=='l') {
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if(cur <= end) cur -= end;
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else cur -= step;
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} else if(effect=='b' || effect=='r') {
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if(cur >= end) cur -= end;
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else cur += step;
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}
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update();
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}
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}
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