initial commit

bigtext.py

@@ -0,0 +1,78 @@
+from PyQt6.QtCore import *
+from PyQt6.QtGui import *
+from PyQt6.QtWidgets import *
+
+from line import Line
+from logFileModel import LogFileModel
+
+
+class BigText(QWidget):
+    _byte_offset = 0
+    _left_offset = 0
+    _selection_start_byte = 1
+    _selection_end_byte = 65
+
+    def __init__(self, model: LogFileModel):
+        super(BigText, self).__init__()
+        self.model = model
+        self.font = QFont("monospace", 12)
+        self.update_font_metrics(QPainter(self))
+
+    def paintEvent(self, event: QPaintEvent) -> None:
+        self.draw()
+
+    def draw(self):
+        painter = QPainter()
+        painter.begin(self)
+        painter.setFont(self.font)
+        painter.setPen(QColor(0, 0, 0))
+        self.update_font_metrics( painter)
+
+        lines_to_show = self.height() / (self.fontMetrics().height())
+        lines = self.model.data(self._byte_offset, lines_to_show)
+
+        y_line_offset = self.char_height;
+        for l in lines:
+
+            if l.intersects(self._selection_start_byte, self._selection_end_byte):
+                self.draw_selection(painter, l, y_line_offset)
+
+            painter.drawText(0, y_line_offset, l.line())
+            y_line_offset = y_line_offset + self.char_height
+
+        painter.end()
+
+    def draw_selection(self, painter: QPainter, line: Line, y_line_offset: int):
+        hightlight_color = QColor(255, 255, 0)
+        if line.includes_byte(self._selection_start_byte):
+            #print("%s bytes in line: " % (self._selection_start_byte - line.byte_offset()))
+            x1 = (self._selection_start_byte - line.byte_offset() - self._left_offset) * self.char_width
+        else:
+            x1 = 0
+
+        if line.includes_byte(self._selection_end_byte):
+            width = (self._selection_end_byte - line.byte_offset() - self._left_offset) * self.char_width - x1
+        else:
+            width = len(line.line().rstrip()) * self.char_width
+
+        y1 = y_line_offset- self.char_height
+        height = self.char_height
+        rect = QRect(x1,y1,width,height)
+        #print(rect)
+        self.hightlight(painter,rect , hightlight_color)
+
+    def hightlight(self, painter: QPainter,rect: QRect, color: QColor):
+        old_brush = painter.brush()
+        old_pen = painter.pen()
+        painter.setBrush(color)
+        painter.setPen(color)
+        painter.drawRoundedRect(rect, 3.0, 3.0)
+        #painter.drawRect(rect)
+        painter.setBrush(old_brush)
+        painter.setPen(old_pen)
+
+    def update_font_metrics(self, painter: QPainter):
+        fm: QFontMetrics = painter.fontMetrics()
+        self.char_height = fm.height()
+        self.char_width = fm.averageCharWidth()# all chars have same with for monospace font
+        print("font width=%s height=%s" % (self.char_width, self.char_height))