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Basic text rendering works

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This commit is contained in:
Kovid Goyal 2016-10-15 16:47:17 +05:30
parent 0336873afc
commit 1875ea7eb4
1 changed files with 9 additions and 6 deletions
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15
kitty/term.py
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@ -4,7 +4,7 @@
from typing import Tuple, Iterator, Union
from PyQt5.QtCore import pyqtSignal, QTimer, Qt, QRect
from PyQt5.QtCore import pyqtSignal, QTimer, QRect
from PyQt5.QtGui import QColor, QPainter, QFont, QFontMetrics, QRegion, QPen
from PyQt5.QtWidgets import QWidget
@ -23,6 +23,7 @@ class TerminalWidget(QWidget):
relayout_lines = pyqtSignal(object, object)
cells_per_line = 80
scroll_amount = 0
def __init__(self, opts, linebuf, parent=None):
QWidget.__init__(self, parent)
@ -49,6 +50,7 @@ class TerminalWidget(QWidget):
self.font_metrics = fm = QFontMetrics(self.font())
self.cell_height = fm.lineSpacing()
self.cell_width = ascii_width(fm)
self.baseline_offset = fm.ascent()
self.do_layout()
def do_layout(self):
@ -80,7 +82,9 @@ class TerminalWidget(QWidget):
def line(self, screen_line: int) -> Union[Line, None]:
try:
lpos = len(self.linebuf) - self.lines_per_screen
if self.lines_per_screen > len(self.linebuf):
return self.linebuf[screen_line]
lpos = max(0, len(self.linebuf) - self.lines_per_screen - self.scroll_amount)
return self.linebuf[lpos]
except IndexError:
pass
@ -100,9 +104,6 @@ class TerminalWidget(QWidget):
p.restore()
def paint_cell(self, painter: QPainter, line: Line, col: int, y: int) -> None:
char = line.char[col]
if not char:
return
x = self.cell_positions[col]
r = QRect(x, y, self.cell_width, self.cell_height)
t, r, g, b = line.fg[col]
@ -112,4 +113,6 @@ class TerminalWidget(QWidget):
bg = as_color(line.bg[col], self.ansi_bg)
if bg is not None:
painter.fillRect(r, bg)
painter.drawText(r, Qt.AlignHCenter | Qt.AlignBaseline | Qt.TextSingleLine, char)
char = line.char[col]
if char:
painter.drawText(x, y + self.baseline_offset, char)