首次提交

YSGraphic_Core/Qt/Text_Shower.cpp

@@ -0,0 +1,126 @@
+#include "Text_Shower.h"
+#include <QPainter>
+#include <QFontMetrics>
+#include <algorithm>
+
+namespace Psc {
+
+Text_Shower::Text_Shower(QWidget* parent)
+    : QWidget(parent)
+{
+    setAttribute(Qt::WA_TranslucentBackground);
+
+    // 宽度交给布局，高度最小
+    setSizePolicy(QSizePolicy::Preferred, QSizePolicy::Minimum);
+}
+
+void Text_Shower::set_text(const QString& text)
+{
+    m_text = text;
+    updateGeometry();  // 通知布局重新计算
+    update();
+}
+
+void Text_Shower::set_title(const QString& title)
+{
+    m_title = title;
+    updateGeometry();
+    update();
+}
+
+void Text_Shower::set_max_width(int w)
+{
+    m_max_width = w;
+    updateGeometry();
+}
+
+bool Text_Shower::hasHeightForWidth() const
+{
+    return true;
+}
+
+int Text_Shower::heightForWidth(int width) const
+{
+    width = std::min(width, m_max_width);
+    return calculate_height(width);
+}
+
+QSize Text_Shower::sizeHint() const
+{
+    int w = std::min(400, m_max_width);
+    return QSize(w, calculate_height(w));
+}
+
+QSize Text_Shower::minimumSizeHint() const
+{
+    return QSize(120, 40);
+}
+
+int Text_Shower::calculate_height(int width) const
+{
+    QFontMetrics fm(font());
+
+    int content_width = width - m_padding * 2;
+    if (content_width <= 0)
+        return 40;
+
+    QRect textRect = fm.boundingRect(
+        QRect(0, 0, content_width, 10000),
+        Qt::TextWordWrap,
+        m_text
+    );
+
+    int height = textRect.height();
+
+    if (!m_title.isEmpty())
+    {
+        QFont titleFont = font();
+        titleFont.setBold(true);
+        QFontMetrics titleFm(titleFont);
+
+        height += titleFm.height() + 6;
+    }
+
+    height += m_padding * 2;
+
+    return height;
+}
+
+void Text_Shower::paintEvent(QPaintEvent*)
+{
+    QPainter painter(this);
+    painter.setRenderHint(QPainter::Antialiasing);
+
+    QRect r = rect();
+
+    painter.setBrush(QColor(255,255,255));
+    painter.setPen(QPen(QColor(0,0,0), 1));
+    painter.drawRoundedRect(r.adjusted(0,0,-1,-1), m_radius, m_radius);
+
+    int y = m_padding;
+
+    if (!m_title.isEmpty())
+    {
+        QFont titleFont = font();
+        titleFont.setBold(true);
+        painter.setFont(titleFont);
+
+        QFontMetrics titleFm(titleFont);
+        painter.drawText(m_padding,
+                         y + titleFm.ascent(),
+                         m_title);
+
+        y += titleFm.height() + 6;
+        painter.setFont(font());
+    }
+
+    QRect textRect(m_padding, y,
+                   width() - m_padding * 2,
+                   height() - y - m_padding);
+
+    painter.drawText(textRect,
+                     Qt::AlignLeft | Qt::TextWordWrap,
+                     m_text);
+}
+
+}