Enable scaling to fit various screen resolutions

[apps/agl-service-windowmanager-2017.git] / src / layers.cpp

diff --git a/src/layers.cpp b/src/layers.cpp
index f73daf2..b961157 100644 (file)
--- a/src/layers.cpp
+++ b/src/layers.cpp
@@ -181,24 +181,60 @@ json layer_map::to_json() const
     return j;
 }
 
-void layer_map::setupArea(int output_w, int output_h)
+compositor::rect layer_map::getAreaSize(const std::string &area)
+{
+    return area2size[area];
+}
+
+const compositor::rect layer_map::getScaleDestRect(
+    int to_w, int to_h, const std::string &aspect_setting)
 {
     compositor::rect rct;
+    rct.x = 0;
+    rct.y = 0;
+    rct.w = to_w;
+    rct.h = to_h;
+    HMI_NOTICE("wm:lm",
+               "Scaling:'%s'. Check 'fullscreen' is set.", aspect_setting.c_str());
+    // Base is "fullscreen". Crash me if "fullscreen" is not set
+    compositor::rect base = this->area2size.at("fullscreen");
+    HMI_DEBUG("wm:lm", "Output size, width: %d, height: %d / fullscreen width: %d, height: %d",
+              to_w, to_h, base.w, base.h);
+    // If full_rct.w or full_rct.h == 0, crash me on purpose
+    double scale_rate_w = double(to_w) / double(base.w);
+    double scale_rate_h = double(to_h) / double(base.h);
+    double scale;
+    if (scale_rate_h < scale_rate_w)
+    {
+        scale = scale_rate_h;
+    }
+    else
+    {
+        scale = scale_rate_w;
+    }
+    HMI_DEBUG("wm", "set scale: %5.2f", scale);
 
-    rct = this->area2size["normal.full"];
-    this->area2size["normalfull"] = rct;
-    this->area2size["normal"] = rct;
+    // Scaling
+    if (aspect_setting == "aspect_fit")
+    {
+        // offset
+        rct.x = (to_w - scale * base.w) / 2;
+        rct.y = (to_h - scale * base.h) / 2;
 
-    for (auto &i : this->area2size)
+        // scaling
+        rct.w = base.w * scale;
+        rct.h = base.h * scale;
+    }
+    else if (aspect_setting == "display_fit")
     {
-        HMI_DEBUG("wm:lm", "area:%s size(after) : x:%d y:%d w:%d h:%d",
-            i.first.c_str(), i.second.x, i.second.y, i.second.w, i.second.h);
+        // offset is none
+        // scaling
+        rct.w = base.w * scale_rate_w;
+        rct.h = base.h * scale_rate_h;
     }
-}
-
-compositor::rect layer_map::getAreaSize(const std::string &area)
-{
-    return area2size[area];
+    HMI_DEBUG("wm:lm", "offset x: %d, y: %d", rct.x, rct.y);
+    HMI_DEBUG("wm:lm", "after scaling w: %d, h: %d", rct.w, rct.h);
+    return rct;
 }
 
 int layer_map::loadAreaDb()