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add a scrollbar next to scale entry to allow scale adjustment in increments of a specific value (since the Scale Slider widget does not support this)

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This commit is contained in:
Huy Pham 2020-03-02 11:02:54 -08:00
parent 933f409498
commit 58cb5a1a1d
1 changed files with 18 additions and 0 deletions
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18
daemon/core/gui/dialogs/preferences.py
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@ -11,6 +11,8 @@ from core.gui.themes import FRAME_PAD, PADX, PADY, scale_fonts
if TYPE_CHECKING:
from core.gui.app import Application
SCALE_INTERVAL = 0.01
class PreferencesDialog(Dialog):
def __init__(self, master: "Application", app: "Application"):
@ -90,6 +92,9 @@ class PreferencesDialog(Dialog):
)
entry.grid(row=0, column=1)
scrollbar = ttk.Scrollbar(scale_frame, command=self.adjust_scale)
scrollbar.grid(row=0, column=2)
def draw_buttons(self):
frame = ttk.Frame(self.top)
frame.grid(sticky="ew")
@ -138,3 +143,16 @@ class PreferencesDialog(Dialog):
# scale toolbar and canvas items
self.app.toolbar.scale()
self.app.canvas.scale_graph()
def adjust_scale(self, arg1: str, arg2: str, arg3: str):
scale_value = self.gui_scale.get()
if arg2 == "-1":
if scale_value <= 4.9:
self.gui_scale.set(scale_value + SCALE_INTERVAL)
else:
self.gui_scale.set(5.0)
elif arg2 == "1":
if scale_value >= 0.6:
self.gui_scale.set(scale_value - SCALE_INTERVAL)
else:
self.gui_scale.set(0.5)