Created
March 28, 2020 11:53
-
-
Save fereria/b1aaf0bdc75bce4987a3affde91dced4 to your computer and use it in GitHub Desktop.
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
# -*- coding: utf-8 -*- | |
import sys | |
import math | |
from PySide2.QtWidgets import (QWidget, | |
QMainWindow, | |
QPushButton, | |
QDialog, | |
QApplication, | |
QVBoxLayout, | |
QGraphicsView, | |
QGraphicsScene) | |
from PySide2.QtCore import (Qt, | |
Signal, | |
QRect, | |
QLineF, | |
QPoint, | |
QPointF, | |
QEvent) | |
from PySide2.QtGui import (QColor, | |
QFont, | |
QPainter, | |
QCursor, | |
QPen, | |
QBrush, | |
QPixmap, | |
QColor, | |
QGradient, | |
QLinearGradient) | |
class ColorPick(QMainWindow): | |
getGradation = Signal(list) | |
def __init__(self, parent=None): | |
super().__init__(parent) | |
self.setMouseTracking(True) | |
self.screen = QApplication.primaryScreen() | |
self.originalPixmap = self.screen.grabWindow(QApplication.desktop().winId()) | |
self.isDrag = False | |
self.currentPos = None | |
self.threshold = 0.5 # 前のPickとの色の差をどの程度までとるか | |
self.totalLength = 0 | |
self.gradation = [] # [距離,R,G,B]の配列を入れる | |
self.startColor = None | |
def mousePressEvent(self, event): | |
self.isDrag = True | |
self.currentPos = QCursor().pos() | |
# クリックしたタイミングを0としてグラデーションをピックする | |
color = self.getCurrentColor(self.currentPos) | |
self.startColor = (color.red(), color.green(), color.blue()) | |
def mouseReleaseEvent(self, event): | |
self.isDrag = False | |
# 1つ目は0なので、そのまま取り出す | |
retVal = [[0, self.startColor]] | |
# 正規化 | |
for i in self.gradation: | |
retVal.append([i[0] / self.totalLength, i[1]]) | |
# マウスを話したらSignalで結果を返す | |
self.getGradation.emit(retVal) | |
self.close() | |
def mouseMoveEvent(self, event): | |
# GradColorを処理する | |
if self.isDrag: | |
pos = QCursor().pos() | |
line = QLineF(QPointF(pos), QPointF(self.currentPos)) | |
# マウスの移動距離を保存(あとで正規化) | |
self.totalLength += line.length() | |
color = self.getCurrentColor(pos) | |
currentColor = (color.red(), color.green(), color.blue()) | |
if len(self.gradation) == 0: | |
if colorDifference(self.startColor, currentColor) > self.threshold: | |
self.gradation.append([self.totalLength, currentColor]) | |
else: | |
lastColor = self.gradation[-1][1] | |
# 色の変化が指定以上だった場合はセットする | |
if colorDifference(lastColor, currentColor) > self.threshold: | |
self.gradation.append([self.totalLength, currentColor]) | |
self.currentPos = pos | |
self.repaint() | |
def paintEvent(self, event): | |
painter = QPainter() | |
painter.begin(self) | |
rectSize = QApplication.desktop().screenGeometry() | |
painter.drawPixmap(rectSize, self.originalPixmap) | |
x = QCursor().pos().x() | |
y = QCursor().pos().y() | |
offset = 30 | |
if self.isDrag: | |
pen = QPen(Qt.red, 7) | |
painter.setPen(pen) | |
painter.drawPoint(x, y) | |
color = self.getCurrentColor(QCursor().pos()) | |
painter.setBrush(color) | |
pen = QPen(Qt.black, 1) | |
painter.setPen(pen) | |
rect = QRect(x + offset, y + offset, 20, 20) | |
painter.drawRect(rect) | |
painter.setFont(QFont(u'メイリオ', 8, QFont.Bold, False)) | |
pen = QPen(Qt.white, 1) | |
painter.setPen(pen) | |
painter.drawText(x + offset + 30, y + offset + 17, f"RGB({color.red()},{color.green()},{color.blue()})") | |
painter.end() | |
def getCurrentColor(self, pos: QPoint): | |
x = pos.x() | |
y = pos.y() | |
return self.originalPixmap.toImage().pixelColor(x, y) | |
def colorDifference(src, dst): | |
# 超シンプルな色差を求める関数 | |
rd = (src[0] / 255.0) - (dst[0] / 255.0) | |
gd = (src[1] / 255.0) - (dst[1] / 255.0) | |
bd = (src[2] / 255.0) - (dst[2] / 255.0) | |
return math.sqrt(rd * rd + gd * gd + bd * bd) / math.sqrt(3) | |
class Gradation(QGraphicsScene): | |
def __init__(self, parent=None): | |
super().__init__(parent) | |
self.colorList = [] | |
@property | |
def width(self): | |
return self.sceneRect().width() | |
@property | |
def height(self): | |
return self.sceneRect().height() | |
def drawBackground(self, painter, rect): | |
grad1 = QLinearGradient(0.0, 0.0, self.width, 0.0) | |
for ratio, color in self.colorList: | |
grad1.setColorAt(ratio, QColor(*color)) | |
painter.setBrush(QBrush(grad1)) | |
painter.drawRect(0, 0, self.width, self.height) | |
def setColor(self, colorList): | |
self.colorList = colorList | |
# グラーデーション確認用GUIを作る | |
class UISample(QDialog): | |
def __init__(self, parent=None): | |
super().__init__(parent) | |
self.resize(350, 100) | |
layout = QVBoxLayout() | |
self.setLayout(layout) | |
self.scene = Gradation() | |
self.scene.setSceneRect(0, 0, 300, 50) | |
self.view = QGraphicsView(self.scene, self) | |
layout.addWidget(self.view) | |
btn = QPushButton("Pickする") | |
layout.addWidget(btn) | |
btn.clicked.connect(self.showPick) | |
def showPick(self): | |
# ボタンを押すと、ピッカーGUIが全画面に表示される | |
a = ColorPick(self) | |
a.showFullScreen() | |
a.getGradation.connect(self.setGradationColor) | |
def setGradationColor(self, colorList): | |
self.scene.setColor(colorList) | |
self.view.repaint() | |
if __name__ == '__main__': | |
app = QApplication(sys.argv) | |
# a = ColorPick() | |
# a.show() | |
win = UISample() | |
win.show() | |
sys.exit(app.exec_()) |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment