VE7UWU/sdrangel
1
0
Fork 0
mirror of https://github.com/f4exb/sdrangel.git synced 2026-05-14 13:22:16 -04:00
Code Issues Projects Releases Wiki Activity

freqdisplay: auto-fit font to available width and height so text is always fully visible

Browse Source 
Agent-Logs-Url: https://github.com/srcejon/sdrangel/sessions/a5adfa9d-7047-46b6-8d9f-ded5f125ab8c

Co-authored-by: srcejon <57259258+srcejon@users.noreply.github.com>
This commit is contained in:
copilot-swe-agent[bot] 2026-04-18 15:45:48 +00:00 committed by GitHub
parent c163d073d1
commit 5df45136f7
No known key found for this signature in database
GPG Key ID: B5690EEEBB952194
1 changed files with 23 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

29
plugins/feature/freqdisplay/freqdisplaygui.cpp
View File

@ -11,9 +11,6 @@
#include "freqdisplaygui.h"
namespace {
// For typical feature windows this keeps the text close to ~22% of the smallest
// widget dimension, which yields large readable digits without clipping.
constexpr double frequencyFontScale = 0.22;
constexpr const char* rxTxChannelKinds = "RT";
constexpr int pollIntervalMs = 1000;
constexpr int minimumFrequencyFontPointSize = 10;
@ -239,13 +236,33 @@ void FreqDisplayGUI::updateFrequencyText()
void FreqDisplayGUI::updateFrequencyFont()
{
const int minDimension = qMin(ui->frequencyValue->width(), ui->frequencyValue->height());
if (minDimension <= 0) {
const int availableWidth = ui->frequencyValue->width();
const int availableHeight = ui->frequencyValue->height();
if (availableWidth <= 0 || availableHeight <= 0) {
return;
}
const int pointSize = qMax(minimumFrequencyFontPointSize, static_cast<int>(minDimension * frequencyFontScale));
const QString text = ui->frequencyValue->text();
if (text.isEmpty()) {
return;
}
// Probe at a large reference size to get accurate text dimensions, then
// scale linearly to find the largest point size that fits in both directions.
QFont font = ui->frequencyValue->font();
constexpr int probeSize = 200;
font.setPointSize(probeSize);
const QFontMetrics fm(font);
const int textWidth = fm.horizontalAdvance(text);
const int textHeight = fm.height();
if (textWidth <= 0 || textHeight <= 0) {
return;
}
const int maxFromWidth = probeSize * availableWidth / textWidth;
const int maxFromHeight = probeSize * availableHeight / textHeight;
const int pointSize = qMax(minimumFrequencyFontPointSize, qMin(maxFromWidth, maxFromHeight));
font.setPointSize(pointSize);
ui->frequencyValue->setFont(font);
}