Added icon widget

CMakeLists.txt

@@ -53,6 +53,7 @@ set(headers
     src/visibleinterface.h
     src/widgets/centeredlabel.h
     src/widgets/graph.h
+    src/widgets/iconwidget.h
     src/widgets/label.h
     src/widgets/progressbar.h
     src/widgets/reverseprogressbar.h
@@ -88,6 +89,7 @@ set(sources
     src/icons/checked_grey.cpp
     src/icons/unchecked_grey.cpp
     src/widgets/centeredlabel.cpp
+    src/widgets/iconwidget.cpp
     src/widgets/label.cpp
     src/widgets/progressbar.cpp
     src/widgets/reverseprogressbar.cpp

src/widgets/iconwidget.cpp

@@ -0,0 +1,68 @@
+#include "iconwidget.h"
+
+namespace espgui {
+void IconWidget::start(TftInterface &tft)
+{
+    m_lastIcon = nullptr;
+}
+
+void IconWidget::start(TftInterface &tft, const int32_t iconWidth, const int32_t iconHeight, const uint16_t *icon)
+{
+    if (m_iconWidth != iconWidth || m_iconHeight != iconHeight)
+    {
+        ESP_LOGE(TAG, "Icon size mismatch: %dx%d vs %ldx%ld", m_iconWidth, m_iconHeight, iconWidth, iconHeight);
+        return;
+    }
+
+    m_lastIcon = icon;
+
+    if (icon)
+        tft.pushImage(m_x, m_y, m_iconWidth, m_iconHeight, icon);
+}
+
+void IconWidget::redraw(TftInterface &tft, const int32_t iconWidth, const int32_t iconHeight, const uint16_t *icon, uint16_t bgcolor, bool forceRedraw)
+{
+    if (m_iconWidth != iconWidth || m_iconHeight != iconHeight)
+    {
+        ESP_LOGE(TAG, "Icon size mismatch: %dx%d vs %ldx%ld", m_iconWidth, m_iconHeight, iconWidth, iconHeight);
+        return;
+    }
+
+    if (forceRedraw || m_lastIcon != icon)
+    {
+        if (icon)
+            tft.pushImage(m_x, m_y, m_iconWidth, m_iconHeight, icon);
+        else if (m_lastIcon)
+            tft.fillRect(m_x, m_y, m_iconWidth, m_iconHeight, bgcolor);
+
+        m_lastIcon = icon;
+    }
+}
+
+void IconWidget::redraw(TftInterface &tft, const int32_t iconWidth, const int32_t iconHeight, const uint16_t *icon, bool forceRedraw)
+{
+    redraw(tft, iconWidth, iconHeight, icon, m_bgcolor, forceRedraw);
+}
+
+void IconWidget::clear(TftInterface &tft, uint16_t bgcolor)
+{
+    if (m_lastIcon)
+        tft.fillRect(m_x, m_y, m_iconWidth, m_iconHeight, bgcolor);
+
+    m_lastIcon = nullptr;
+}
+
+void IconWidget::clear(TftInterface &tft)
+{
+    clear(tft, m_bgcolor);
+}
+
+IconWidget::IconWidget(int x, int y, int iconWidth, int iconHeight, uint16_t bgcolor):
+        m_x{x},
+        m_y{y},
+        m_iconWidth{iconWidth},
+        m_iconHeight{iconHeight},
+        m_bgcolor{bgcolor},
+        m_lastIcon{nullptr}
+{}
+} // namespace espgui

src/widgets/iconwidget.h

@@ -0,0 +1,45 @@
+#pragma once
+
+// esp-idf includes
+#include <esp_log.h>
+
+// local includes
+#include "icon.h"
+#include "tftcolors.h"
+#include "tftinterface.h"
+
+namespace espgui {
+
+class IconWidget
+{
+    static constexpr const char * const TAG = "IconWidget";
+public:
+    IconWidget(int x, int y, int iconWidth, int iconHeight, uint16_t bgcolor = espgui::TFT_BLACK);
+
+    void start(TftInterface &tft);
+
+    void start(TftInterface &tft, int32_t iconWidth, int32_t iconHeight, const uint16_t *icon);
+
+    void redraw(TftInterface &tft, int32_t iconWidth, int32_t iconHeight, const uint16_t *icon, uint16_t bgcolor, bool forceRedraw = false);
+
+    void redraw(TftInterface &tft, int32_t iconWidth, int32_t iconHeight, const uint16_t *icon, bool forceRedraw = false);
+
+    void clear(espgui::TftInterface &tft, uint16_t bgcolor);
+
+    void clear(espgui::TftInterface &tft);
+
+    int x() const { return m_x; }
+
+    int y() const { return m_y; }
+
+private:
+    const int m_x;
+    const int m_y;
+    const int m_iconWidth;
+    const int m_iconHeight;
+
+    uint16_t m_bgcolor;
+
+    const uint16_t *m_lastIcon;
+};
+}