[client] splash: added LG url, version and copyright strings

client/src/overlay/splash.c

@@ -26,10 +26,15 @@
 #include "overlay_utils.h"
 #include "common/array.h"
 
+#include "version.h"
+#include "common/appstrings.h"
+#include "common/stringlist.h"
+#include "common/stringutils.h"
+
 #include "resources/lg-logo.svg.h"
 
+#include <string.h>
 #include <math.h>
-#include <GL/gl.h>
 
 #define SEGMENTS 12
 
@@ -38,6 +43,8 @@ static bool         l_fadeDone;
 static float        l_alpha;
 static OverlayImage l_logo;
 static float        l_vectors[SEGMENTS][2];
+static StringList   l_tagline;
+static StringList   l_footline;
 
 static void calcRadialVectors(float vectors[][2], int segments)
 {
@@ -86,12 +93,63 @@ static bool splash_init(void ** udata, const void * params)
 
   overlayLoadSVG(b_lg_logo_svg, b_lg_logo_svg_size, &l_logo, 200, 200);
   calcRadialVectors(l_vectors, ARRAY_LENGTH(l_vectors));
+
+  l_tagline  = stringlist_new(false);
+  l_footline = stringlist_new(false);
+
+  stringlist_push(l_tagline, "Looking Glass");
+  stringlist_push(l_tagline, (char *)LG_WEBSITE_URL);
+
+  stringlist_push(l_footline, (char *)LG_VERSION_STR);
+  stringlist_push(l_footline, (char *)LG_COPYRIGHT_STR);
+
   return true;
 }
 
 static void splash_free(void * udata)
 {
   overlayFreeImage(&l_logo);
+  stringlist_free(&l_tagline );
+  stringlist_free(&l_footline);
+}
+
+static void renderText(ImDrawList * list, int x, int y, ImU32 color,
+    StringList lines, bool topAlign)
+{
+  static float textHeight = 0.0f;
+  ImVec2 size;
+
+  if (textHeight == 0.0f)
+  {
+    const char * tmp = "W";
+    igCalcTextSize(&size, tmp, tmp + 1, false, 0.0f);
+    textHeight = size.y;
+  }
+
+  float fy = y;
+  const unsigned int count = stringlist_count(lines);
+  for(int i = 0; i < count; ++i)
+  {
+    const char * text = stringlist_at(lines, topAlign ? i : count - i - 1);
+    const int    len  = strlen(text);
+
+    igCalcTextSize(&size, text, text + len, false, 0.0f);
+    ImDrawList_AddText_Vec2(
+      list,
+      (ImVec2){
+       x - size.x / 2,
+       topAlign ? fy : fy - size.y
+      },
+      color,
+      text,
+      text + len
+    );
+
+    if (topAlign)
+      fy += textHeight;
+    else
+      fy -= textHeight;
+  }
 }
 
 static int splash_render(void * udata, bool interactive, struct Rect * windowRects,
@@ -124,6 +182,8 @@ static int splash_render(void * udata, bool interactive, struct Rect * windowRec
       0.0f, 0.0f, 0.0f, alpha});
   const ImU32 imageColor = igColorConvertFloat4ToU32((ImVec4){
       1.0f, 1.0f, 1.0f, alpha});
+  const ImU32 fontColor  = igColorConvertFloat4ToU32((ImVec4){
+      0.8f, 0.8f, 0.8f, alpha});
 
   drawRadialGradient(list,
       screen->x / 2, screen->y / 2,
@@ -148,6 +208,20 @@ static int splash_render(void * udata, bool interactive, struct Rect * windowRec
     (ImVec2){ 1, 1 },
     imageColor);
 
+  renderText(list,
+      screen->x / 2,
+      logoRect.y + logoRect.h + 10,
+      fontColor,
+      l_tagline,
+      true);
+
+  renderText(list,
+      screen->x / 2,
+      screen->y - 10,
+      fontColor,
+      l_footline,
+      false);
+
   *windowRects = rect;
   return 1;
 }