disable right click eraser mode feature by settings and force disable for etap

Author: sulincix

data/tr.org.pardus.pen.default.conf

@@ -14,3 +14,4 @@ pressure=0
 is-vertical=true
 fuar=false
 xwayland=false
+eraser-mode=true

src/main.cpp

@@ -13,9 +13,26 @@
 #include "tools.h"
 
 bool is_wayland;
+bool is_etap = false;
 extern void mainWindowInit();
 int history;
 
+static bool detect_etap(){
+    FILE *f = fopen("/etc/os-release", "r");
+    if(f == NULL){
+        return false;
+    }
+    char buffer[1024];
+    while (fgets(buffer, sizeof(buffer), f)) {
+        char needed[] = "VERSION_CODENAME=";
+        if(strncmp(needed, buffer, strlen(needed)) == 0){
+            return (strncmp(buffer+strlen(needed), "etap", 4) == 0);
+        }
+    }
+    fclose(f);
+    return false;
+}
+
 int main(int argc, char *argv[]) {
     settings_init();
 #ifdef ETAP19
@@ -30,6 +47,7 @@ int main(int argc, char *argv[]) {
     p2.execute("gsettings", args2);
 #endif
 
+    is_etap = detect_etap();
     is_wayland = (getenv("WAYLAND_DISPLAY") != NULL);
     // gnome wayland fullscreen compositor is buggy.
     // Force prefer Xwayland for fix this issue.

src/tools.h

@@ -63,6 +63,7 @@ extern QWidget *bgMenu;
 extern float scale;
 extern int history;
 extern bool is_wayland;
+extern bool is_etap;
 
 extern QSlider *scrollHSlider;
 extern QSlider *scrollVSlider;

src/widgets/DrawingWidget.cpp

@@ -523,10 +523,12 @@ int DrawingWidget::getLineStyle(){
 void DrawingWidget::eventHandler(int source, int type, int id, QPointF pos, float pressure){
     debug("source: %d type: %d id:%d\n", source, type, id);
     int ev_pen = penType;
-    if(source & Qt::MiddleButton) {
-        penType = MARKER;
-    } else if(source & Qt::RightButton) {
-        penType = ERASER;
+    if(get_bool("eraser-mode") && ! is_etap){
+        if(source & Qt::MiddleButton) {
+            penType = MARKER;
+        } else if(source & Qt::RightButton) {
+            penType = ERASER;
+        }
     }
     switch(type) {
         case PRESS: