add scroll to app details, fix progress bar centering

gui/AppDetails.cpp

@@ -43,20 +43,24 @@ AppDetails::AppDetails(Package* package, AppList* appList)
     this->elements.push_back(cancel);
 
 
+    // the scrollable portion of the app details page
+    AppDetailsContent* content = new AppDetailsContent();
+    this->elements.push_back(content);
+    
 	TextElement* title = new TextElement(package->title.c_str(), 35, &black);
 	title->position(20, 20);
-	this->elements.push_back(title);
+	content->elements.push_back(title);
 
 	int MARGIN = 525;
 
 	TextElement* title2 = new TextElement(package->author.c_str(), 27, &gray);
 	title2->position(20, 80);
-	this->elements.push_back(title2);
+	content->elements.push_back(title2);
 
 	// the main description (wrapped text)
      TextElement* details = new TextElement(package->long_desc.c_str(), 20, &black, false, 700);
      details->position(150, 230);
-     this->elements.push_back(details);
+     content->elements.push_back(details);
     
     
     // lots of details that we know about the package
@@ -124,12 +128,13 @@ bool AppDetails::process(InputEvents* event)
 			// event->key.keysym.sym = SDLK_z;
 			event->update();
 			this->highlighted = -1;
-
+            
 			// add a progress bar to the screen to be drawn
 			this->pbar = new ProgressBar();
-			pbar->position(580, 495);
+            pbar->width = 740;
+			pbar->position(1280/2 - this->pbar->width/2, 720/2 - 5);
 			pbar->color = 0xff0000ff;
-			pbar->width = 500;
+            pbar->dimBg = true;
 			this->elements.push_back(pbar);
 
 			// hide the two specific elements for the download/install/remove and close buttons
@@ -173,7 +178,7 @@ bool AppDetails::process(InputEvents* event)
 	if (event->isTouchDown())
 		this->dragging = true;
 
-	return false;
+    return super::process(event);
 }
 
 void AppDetails::render(Element* parent)
@@ -237,3 +242,18 @@ int AppDetails::updateCurrentlyDisplayedPopup(void *clientp, double dltotal, dou
     
     return 0;
 }
+
+void AppDetailsContent::render(Element* parent)
+{
+    if (this->parent == NULL)
+        this->parent = parent;
+    
+    this->renderer = parent->renderer;
+    
+    super::render(this);
+}
+
+bool AppDetailsContent::process(InputEvents* event)
+{
+    return ListElement::process(event);
+}

gui/AppDetails.hpp

@@ -4,6 +4,7 @@
 #include "TextElement.hpp"
 #include "ImageElement.hpp"
 #include "ProgressBar.hpp"
+#include "ListElement.hpp"
 #include "../libs/get/src/Package.hpp"
 #include "../libs/get/src/Get.hpp"
 
@@ -27,4 +28,10 @@ public:
     static int updateCurrentlyDisplayedPopup(void *clientp, double dltotal, double dlnow, double ultotal, double ulnow);
 };
 
+class AppDetailsContent : public ListElement
+{
+    bool process(InputEvents* event);
+    void render(Element* parent);
+};
+
 #endif

gui/AppList.cpp

@@ -94,11 +94,8 @@ bool AppList::process(InputEvents* event)
         this->highlighted = -1;
         this->touchMode = true;
     }
-
-    // perform inertia scrolling for this element
-    ret |= this->handleInertiaScroll(event);
     
-	ret |= super::process(event);
+	ret |= ListElement::process(event);
 
 	return ret;
 }

gui/ListElement.cpp

@@ -1,6 +1,18 @@
 #include "ListElement.hpp"
 #include <SDL2/SDL2_gfxPrimitives.h>
 
+bool ListElement::process(InputEvents* event)
+{
+    bool ret = false;
+    
+    // perform inertia scrolling for this element
+    ret |= this->handleInertiaScroll(event);
+    
+    ret |= super::process(event);
+    
+    return ret;
+}
+
 bool ListElement::handleInertiaScroll(InputEvents* event)
 {
     bool ret = false;

gui/ListElement.hpp

@@ -7,5 +7,6 @@ class ListElement : public Element
 public:
     int highlighted = -1;
     int initialTouchDown = -1;
+    bool process(InputEvents* event);
 	bool handleInertiaScroll(InputEvents* event);
 };

gui/MainDisplay.cpp

@@ -165,6 +165,7 @@ bool MainDisplay::process(InputEvents* event)
 			// add in the sidebar, footer, and main app listing
 			Sidebar* sidebar = new Sidebar();
 			this->elements.push_back(sidebar);
+            
 			AppList* applist = new AppList(this->get, sidebar);
 			this->elements.push_back(applist);
 			sidebar->appList = applist;

gui/ProgressBar.cpp

@@ -13,12 +13,24 @@ void ProgressBar::render(Element* parent)
     if (this->percent < 0)
         return;
     
+    if (dimBg)
+    {
+        // draw a big dim layer around the entire window before drawing this progress bar
+        SDL_Rect dim = { 0, 0, 1280, 720 };
+        
+        SDL_SetRenderDrawBlendMode(parent->renderer, SDL_BLENDMODE_BLEND);
+        SDL_SetRenderDrawColor(parent->renderer, 0x00, 0x00, 0x00, 0xbb);
+        SDL_RenderFillRect(parent->renderer, &dim);
+    }
+    
 	SDL_Rect location;
 	int x = this->x + parent->x;
 	int y = this->y + parent->y;
 
 	int blue = this->color;
 //	int gray = 0x989898ff;
+    
+    
 
 	// draw full grayed out bar first
 	SDL_Rect gray_rect;

gui/ProgressBar.hpp

@@ -8,6 +8,7 @@ public:
 	float percent = 0;
 	
 	int color;
-	
+    bool dimBg = false;
+    
 	int width = 0;
 };