Absolute mouse support (was #6331)

libraries/USB/src/USBHIDMouse.cpp

@@ -25,69 +25,134 @@
 
 #include "USBHIDMouse.h"
 
-static const uint8_t report_descriptor[] = {
-    TUD_HID_REPORT_DESC_MOUSE(HID_REPORT_ID(HID_REPORT_ID_MOUSE))
-};
-
-USBHIDMouse::USBHIDMouse(): hid(), _buttons(0){
+USBHIDMouseBase::USBHIDMouseBase(HIDMouseType_t *type) : hid(), _buttons(0), _type(type)
+{
     static bool initialized = false;
     if(!initialized){
         initialized = true;
-        hid.addDevice(this, sizeof(report_descriptor));
+        hid.addDevice(this, _type->descriptor_size);
     }
+};
+
+uint16_t USBHIDMouseBase::_onGetDescriptor(uint8_t* dst)
+{
+    memcpy(dst, _type->report_descriptor, _type->descriptor_size);
+    return _type->descriptor_size;
 }
 
-uint16_t USBHIDMouse::_onGetDescriptor(uint8_t* dst){
-    memcpy(dst, report_descriptor, sizeof(report_descriptor));
-    return sizeof(report_descriptor);
+
+void USBHIDMouseBase::buttons(uint8_t b)
+{
+    if (b != _buttons){
+        _buttons = b;
+    }
 }
 
-void USBHIDMouse::begin(){
+
+void USBHIDMouseBase::begin()
+{
     hid.begin();
 }
 
-void USBHIDMouse::end(){
+void USBHIDMouseBase::end()
+{
+}
+
+
+void USBHIDMouseBase::press(uint8_t b)
+{
+    this->buttons(_buttons | b);
+}
+
+void USBHIDMouseBase::release(uint8_t b)
+{
+    this->buttons(_buttons & ~b);
+}
+
+bool USBHIDMouseBase::isPressed(uint8_t b)
+{
+    if ((b & _buttons) > 0) {
+        return true;
+    }
+    return false;
+}
+
+
+
+static const uint8_t abs_mouse_report_descriptor[] = {
+    TUD_HID_REPORT_DESC_ABSMOUSE(HID_REPORT_ID(HID_REPORT_ID_MOUSE))
+};
+
+HIDMouseType_t HIDMouseAbs = { HID_MOUSE_ABSOLUTE, abs_mouse_report_descriptor, sizeof(abs_mouse_report_descriptor), sizeof(hid_abs_mouse_report_t) };
+
+
+void USBHIDAbsoluteMouse::move(int16_t x, int16_t y, int8_t wheel, int8_t pan)
+{
+    hid_abs_mouse_report_t report;
+    report.buttons = _buttons;
+    report.x       = _lastx = x;
+    report.y       = _lasty = y;
+    report.wheel   = wheel;
+    report.pan     = pan;
+    sendReport(report);
 }
 
-void USBHIDMouse::move(int8_t x, int8_t y, int8_t wheel, int8_t pan){
+
+void USBHIDAbsoluteMouse::click(uint8_t b)
+{
+    _buttons = b;
+    move(_lastx,_lasty);
+    _buttons = 0;
+    move(_lastx,_lasty);
+}
+
+void USBHIDAbsoluteMouse::buttons(uint8_t b)
+{
+    if (b != _buttons){
+        _buttons = b;
+        move(_lastx,_lasty);
+    }
+}
+
+
+
+static const uint8_t rel_mouse_report_descriptor[] = {
+    TUD_HID_REPORT_DESC_MOUSE(HID_REPORT_ID(HID_REPORT_ID_MOUSE))
+};
+
+HIDMouseType_t HIDMouseRel = { HID_MOUSE_RELATIVE, rel_mouse_report_descriptor, sizeof(rel_mouse_report_descriptor), sizeof(hid_mouse_report_t) };
+
+
+
+void USBHIDRelativeMouse::move(int8_t x, int8_t y, int8_t wheel, int8_t pan)
+{
     hid_mouse_report_t report = {
         .buttons = _buttons,
         .x       = x,
         .y       = y,
         .wheel   = wheel,
         .pan     = pan
     };
-    hid.SendReport(HID_REPORT_ID_MOUSE, &report, sizeof(report));
+    sendReport(report);
 }
 
-void USBHIDMouse::click(uint8_t b){
+
+void USBHIDRelativeMouse::click(uint8_t b)
+{
     _buttons = b;
     move(0,0);
     _buttons = 0;
     move(0,0);
 }
 
-void USBHIDMouse::buttons(uint8_t b){
+void USBHIDRelativeMouse::buttons(uint8_t b)
+{
     if (b != _buttons){
         _buttons = b;
         move(0,0);
     }
 }
 
-void USBHIDMouse::press(uint8_t b){
-    buttons(_buttons | b);
-}
-
-void USBHIDMouse::release(uint8_t b){
-    buttons(_buttons & ~b);
-}
-
-bool USBHIDMouse::isPressed(uint8_t b){
-    if ((b & _buttons) > 0) {
-        return true;
-    }
-    return false;
-}
 
 #endif /* CONFIG_TINYUSB_HID_ENABLED */
 #endif /* SOC_USB_OTG_SUPPORTED */

libraries/USB/src/USBHIDMouse.h

@@ -34,26 +34,68 @@
 #define MOUSE_FORWARD   0x10
 #define MOUSE_ALL       0x1F
 
-class USBHIDMouse: public USBHIDDevice {
-private:
-    USBHID hid;
-    uint8_t _buttons;
-    void buttons(uint8_t b);
-    bool write(int8_t x, int8_t y, int8_t vertical, int8_t horizontal);
+#include "./tusb_hid_mouse.h"
+
+enum MousePositioning_t
+{
+  HID_MOUSE_RELATIVE,
+  HID_MOUSE_ABSOLUTE
+};
+
+struct HIDMouseType_t
+{
+  MousePositioning_t positioning;
+  const uint8_t* report_descriptor;
+  size_t descriptor_size;
+  size_t report_size;
+};
+
+extern HIDMouseType_t HIDMouseRel;
+extern HIDMouseType_t HIDMouseAbs;
+
+
+class USBHIDMouseBase: public USBHIDDevice {
 public:
-    USBHIDMouse(void);
+    USBHIDMouseBase(HIDMouseType_t *type);
     void begin(void);
     void end(void);
-
-    void click(uint8_t b = MOUSE_LEFT);
-    void move(int8_t x, int8_t y, int8_t wheel = 0, int8_t pan = 0); 
     void press(uint8_t b = MOUSE_LEFT);   // press LEFT by default
     void release(uint8_t b = MOUSE_LEFT); // release LEFT by default
     bool isPressed(uint8_t b = MOUSE_LEFT); // check LEFT by default
-
+    template <typename T> bool sendReport(T report) { return hid.SendReport( HID_REPORT_ID_MOUSE, &report, _type->report_size ); };
     // internal use
     uint16_t _onGetDescriptor(uint8_t* buffer);
+    virtual void buttons(uint8_t b);
+protected:
+    USBHID hid;
+    uint8_t _buttons;
+    HIDMouseType_t *_type;
+};
+
+
+class USBHIDRelativeMouse: public USBHIDMouseBase {
+public:
+    USBHIDRelativeMouse(void): USBHIDMouseBase(&HIDMouseRel) { }
+    void move(int8_t x, int8_t y, int8_t wheel = 0, int8_t pan = 0);
+    void click(uint8_t b = MOUSE_LEFT);
+    void buttons(uint8_t b) override;
+};
+
+
+class USBHIDAbsoluteMouse: public USBHIDMouseBase {
+public:
+    USBHIDAbsoluteMouse(void): USBHIDMouseBase(&HIDMouseAbs) { }
+    void move(int16_t x, int16_t y, int8_t wheel = 0, int8_t pan = 0);
+    void click(uint8_t b = MOUSE_LEFT);
+    void buttons(uint8_t b) override;
+private:
+    int16_t _lastx = 0;
+    int16_t _lasty = 0;
 };
 
+
+// don't break examples and old sketches
+typedef USBHIDRelativeMouse USBHIDMouse;
+
 #endif /* CONFIG_TINYUSB_HID_ENABLED */
 #endif /* SOC_USB_OTG_SUPPORTED */

libraries/USB/src/tusb_hid_mouse.h

@@ -0,0 +1,98 @@
+#pragma once
+
+#include "class/hid/hid_device.h"
+
+#if !defined TUD_HID_REPORT_DESC_ABSMOUSE
+  // This version of arduino-esp32 does not handle absolute mouse natively.
+  // Let's throw a minimalistic implementation of absmouse driver.
+  // See: https://github.com/hathach/tinyusb/pull/1363
+  // Also see: https://github.com/espressif/arduino-esp32/pull/6331
+
+  extern "C" {
+
+    // Absolute Mouse data struct is a copy of the relative mouse struct
+    // with int16_t instead of int8_t for X and Y coordinates.
+    typedef struct TU_ATTR_PACKED
+    {
+        uint8_t buttons = 0;
+        int16_t x = 0;
+        int16_t y = 0;
+        int8_t wheel = 0;
+        int8_t pan = 0;
+    } hid_abs_mouse_report_t;
+
+
+    // Absolute Mouse Report Descriptor Template applies those datatype changes too
+    #define TUD_HID_REPORT_DESC_ABSMOUSE(...) \
+      HID_USAGE_PAGE ( HID_USAGE_PAGE_DESKTOP      )                   ,\
+      HID_USAGE      ( HID_USAGE_DESKTOP_MOUSE     )                   ,\
+      HID_COLLECTION ( HID_COLLECTION_APPLICATION  )                   ,\
+        /* Report ID if any */\
+        __VA_ARGS__ \
+        HID_USAGE      ( HID_USAGE_DESKTOP_POINTER )                   ,\
+        HID_COLLECTION ( HID_COLLECTION_PHYSICAL   )                   ,\
+          HID_USAGE_PAGE  ( HID_USAGE_PAGE_BUTTON  )                   ,\
+            HID_USAGE_MIN   ( 1                                      ) ,\
+            HID_USAGE_MAX   ( 5                                      ) ,\
+            HID_LOGICAL_MIN ( 0                                      ) ,\
+            HID_LOGICAL_MAX ( 1                                      ) ,\
+            /* Left, Right, Middle, Backward, Forward buttons */ \
+            HID_REPORT_COUNT( 5                                      ) ,\
+            HID_REPORT_SIZE ( 1                                      ) ,\
+            HID_INPUT       ( HID_DATA | HID_VARIABLE | HID_ABSOLUTE ) ,\
+            /* 3 bit padding */ \
+            HID_REPORT_COUNT( 1                                      ) ,\
+            HID_REPORT_SIZE ( 3                                      ) ,\
+            HID_INPUT       ( HID_CONSTANT                           ) ,\
+          HID_USAGE_PAGE  ( HID_USAGE_PAGE_DESKTOP )                   ,\
+            /* X, Y absolute position [0, 32767] */ \
+            HID_USAGE       ( HID_USAGE_DESKTOP_X                    ) ,\
+            HID_USAGE       ( HID_USAGE_DESKTOP_Y                    ) ,\
+            HID_LOGICAL_MIN  ( 0x00                                ) ,\
+            HID_LOGICAL_MAX_N( 0x7FFF, 2                           ) ,\
+            HID_REPORT_SIZE  ( 16                                  ) ,\
+            HID_REPORT_COUNT ( 2                                   ) ,\
+            HID_INPUT       ( HID_DATA | HID_VARIABLE | HID_ABSOLUTE ) ,\
+            /* Vertical wheel scroll [-127, 127] */ \
+            HID_USAGE       ( HID_USAGE_DESKTOP_WHEEL                )  ,\
+            HID_LOGICAL_MIN ( 0x81                                   )  ,\
+            HID_LOGICAL_MAX ( 0x7f                                   )  ,\
+            HID_REPORT_COUNT( 1                                      )  ,\
+            HID_REPORT_SIZE ( 8                                      )  ,\
+            HID_INPUT       ( HID_DATA | HID_VARIABLE | HID_RELATIVE )  ,\
+          HID_USAGE_PAGE  ( HID_USAGE_PAGE_CONSUMER ), \
+          /* Horizontal wheel scroll [-127, 127] */ \
+            HID_USAGE_N     ( HID_USAGE_CONSUMER_AC_PAN, 2           ), \
+            HID_LOGICAL_MIN ( 0x81                                   ), \
+            HID_LOGICAL_MAX ( 0x7f                                   ), \
+            HID_REPORT_COUNT( 1                                      ), \
+            HID_REPORT_SIZE ( 8                                      ), \
+            HID_INPUT       ( HID_DATA | HID_VARIABLE | HID_RELATIVE ), \
+        HID_COLLECTION_END                                            , \
+      HID_COLLECTION_END \
+
+    static inline bool tud_hid_n_abs_mouse_report(uint8_t instance, uint8_t report_id, uint8_t buttons, int16_t x, int16_t y, int8_t vertical, int8_t horizontal)
+    {
+      hid_abs_mouse_report_t report =
+      {
+        .buttons = buttons,
+        .x       = x,
+        .y       = y,
+        .wheel   = vertical,
+        .pan     = horizontal
+      };
+      return tud_hid_n_report(instance, report_id, &report, sizeof(report));
+    }
+
+    static inline bool tud_hid_abs_mouse_report(uint8_t report_id, uint8_t buttons, int16_t x, int16_t y, int8_t vertical, int8_t horizontal)
+    {
+      return tud_hid_n_abs_mouse_report(0, report_id, buttons, x, y, vertical, horizontal);
+    }
+
+
+  } // end extern "C"
+
+#else
+  #pragma message "This file is now safe to delete along with its include from USBHIDMouse.h"
+#endif
+