X-Git-Url: http://git.localhorst.tv/?a=blobdiff_plain;f=src%2Fui%2Fwidgets.cpp;h=533703fd84da47dea5e8d12f5c3df12d5c0e450f;hb=b49cc8c88caf7d69b35b50e23a40528e71306ade;hp=b19dbcf62de2cc4e76275b57e5b8c4b087e45af2;hpb=3542823a1af7f5063d7cc8da84efa248eb889b8a;p=blank.git

diff --git a/src/ui/widgets.cpp b/src/ui/widgets.cpp
index b19dbcf..533703f 100644
--- a/src/ui/widgets.cpp
+++ b/src/ui/widgets.cpp
@@ -19,7 +19,8 @@ MessageBox::MessageBox(const Font &f)
 , adv(0.0f, font.LineSkip(), 0.0f)
 , bg(1.0f, 1.0f, 1.0f, 0.0f)
 , fg(1.0f, 1.0f, 1.0f, 1.0f)
-, grav(Gravity::NORTH_WEST) {
+, grav(Gravity::NORTH_WEST)
+, dirty(true) {
 
 }
 
@@ -34,6 +35,7 @@ void MessageBox::Position(const glm::vec3 &p, Gravity g) noexcept {
 	for (Text &txt : lines) {
 		txt.Pivot(g);
 	}
+	dirty = true;
 }
 
 void MessageBox::PushLine(const char *text) {
@@ -45,13 +47,41 @@ void MessageBox::PushLine(const char *text) {
 	while (lines.size() > max_lines) {
 		lines.pop_back();
 	}
+	dirty = true;
+}
+
+namespace {
+
+PrimitiveMesh::Buffer bg_buf;
+
+}
+
+void MessageBox::Recalc() {
+	size = glm::vec2(0.0f, 0.0f);
+	for (const Text &line : lines) {
+		size.x = std::max(size.x, line.Size().x);
+		size.y += line.Size().y;
+	}
+	bg_buf.FillRect(size.x, size.y, bg, align(grav, size));
+	bg_mesh.Update(bg_buf);
+	bg_buf.Clear();
+	dirty = false;
 }
 
 void MessageBox::Render(Viewport &viewport) noexcept {
+	viewport.SetCursor(pos, grav);
+	if (bg.a > std::numeric_limits<float>::epsilon()) {
+		if (dirty) {
+			Recalc();
+		}
+		PlainColor &prog = viewport.HUDColorProgram();
+		prog.SetM(viewport.Cursor());
+		bg_mesh.DrawTriangles();
+		viewport.MoveCursor(glm::vec3(0.0f, 0.0f, -1.0f));
+	}
 	BlendedSprite &prog = viewport.SpriteProgram();
-	prog.SetBG(bg);
+	prog.SetBG(glm::vec4(0.0f));
 	prog.SetFG(fg);
-	viewport.SetCursor(pos, grav);
 	for (Text &txt : lines) {
 		prog.SetM(viewport.Cursor());
 		txt.Render(viewport);