fix android view resize on keyboard, also allow all device orientations

src/app.cpp

@@ -97,7 +97,7 @@ bool App::request_close()
 void App::clear()
 {
     glClearColor(.1f, .1f, .1f, 1.f);
-    glViewport(0, 0, (GLsizei)width, (GLsizei)height);
+    glViewport(off_x, off_y, (GLsizei)width, (GLsizei)height);
     glClear(GL_COLOR_BUFFER_BIT);
 }
 
@@ -500,12 +500,13 @@ void App::update(float dt)
             //auto box = n->m_clip;
             //glm::ivec4 c = glm::vec4((int)box.x - 1, (int)(height / zoom - box.y - box.w) - 1, (int)box.z + 2, (int)box.w + 2) * zoom;
             glm::ivec4 c = glm::vec4((int)box.x, (int)(height / zoom - box.y - box.w), (int)box.z, (int)box.w) * zoom;
-            glScissor(c.x, c.y, c.z, c.w);
+            glScissor(c.x + off_x, c.y + off_y, c.z, c.w);
             n->draw();
             return true;
         }
         return false;
     };
+    /*
     uirtt.bindFramebuffer();
     uirtt.clear();
     glEnable(GL_SCISSOR_TEST);
@@ -514,7 +515,7 @@ void App::update(float dt)
     //msgbox->watch(observer);
     glDisable(GL_SCISSOR_TEST);
     uirtt.unbindFramebuffer();
-
+    */
 #if __IOS__
     [ios_view->glview bindDrawable];
 #else

src/app.h

@@ -79,6 +79,8 @@ public:
     std::string doc_filename;
     bool has_stylus = false;
     bool has_vr = false;
+    float off_x = 0;
+    float off_y = 0;
     float width;
     float height;
     bool keys[256];

src/node_canvas.cpp

@@ -70,7 +70,7 @@ void NodeCanvas::draw()
     glm::ivec4 c = (glm::ivec4)glm::vec4(box.x, (int)(vp[3] - box.y - box.w), box.z, box.w);
     glClearColor(1, 1, 1, 0);
     glClear(GL_COLOR_BUFFER_BIT);
-    glViewport(c.x, c.y, c.z, c.w);
+    glViewport(c.x + App::I.off_x, c.y + App::I.off_y, c.z, c.w);
 
     //m_canvas->m_cam_rot = m_pan * 0.003f;
 

src/node_viewport.cpp

@@ -2,6 +2,7 @@
 #include "log.h"
 #include "node_viewport.h"
 #include "shader.h"
+#include "app.h"
 
 void NodeViewport::draw()
 {
@@ -17,7 +18,7 @@ void NodeViewport::draw()
     glClear(GL_COLOR_BUFFER_BIT);
     auto box = m_clip * root()->m_zoom;
     glm::ivec4 c = (glm::ivec4)glm::vec4(box.x, (int)(vp[3] - box.y - box.w), box.z, box.w);
-    glViewport(c.x, c.y, c.z, c.w);
+    glViewport(c.x + App::I.off_x, c.y + App::I.off_y, c.z, c.w);
     TextureManager::get(m_tex_id).bind();
     m_sampler->bind(0);
     glEnable(GL_BLEND);