add OSK preview scrolling, background, fix DrawLayerProxy,

make TextConfig.Print string ref const, make form priority float,
ScrollField::ScrollIntoView, minor BitmapFont fix

libstarlight/source/starlight/ThemeManager.cpp

@@ -347,11 +347,11 @@ TextConfig::TextConfig(const std::string& fontName, Color text, Color border) {
     textColor = text; borderColor = border;
 }
 
-void TextConfig::Print(Vector2 position, std::string& text, Vector2 justification) { 
+void TextConfig::Print(Vector2 position, const std::string& text, Vector2 justification) { 
     if (!justification) justification = this->justification;
     font->Print(position, text, 1, textColor, justification, borderColor);
 }
-void TextConfig::Print(VRect rect, std::string& text, Vector2 justification) {
+void TextConfig::Print(VRect rect, const std::string& text, Vector2 justification) {
     if (!justification) justification = this->justification;
     font->Print(rect, text, 1, textColor, justification, borderColor);
 }

libstarlight/source/starlight/ThemeManager.h

@@ -85,8 +85,8 @@ namespace starlight {
         TextConfig(const std::string& fontName, Color text, Color border = Color::transparent);
         ~TextConfig() = default;
         
-        void Print(Vector2 position, std::string& text, Vector2 justification = Vector2::invalid);
+        void Print(Vector2 position, const std::string& text, Vector2 justification = Vector2::invalid);
-        void Print(VRect rect, std::string& text, Vector2 justification = Vector2::invalid);
+        void Print(VRect rect, const std::string& text, Vector2 justification = Vector2::invalid);
         
         Vector2 Measure(const std::string& text, float maxWidth = 65536*64);
         

libstarlight/source/starlight/dialog/OSK.cpp

@@ -36,13 +36,15 @@ namespace {
         static auto tc = ThemeManager::GetMetric<starlight::TextConfig>("/dialogs/OSK/preview");
         return tc;
     }
+    
+    const constexpr float textHang = 4;
 }
 
 OSK::OSK(osk::InputHandler* handler) : Form(true), handler(handler) {
     priority = 1000; // probably don't want all that much displaying above the keyboard
     handler->parent = this;
     
-    auto cover = std::make_shared<Image>(touchScreen->rect.Expand(4), "decorations/dialog.modal-cover");
+    auto cover = std::make_shared<Image>(touchScreen->rect, "decorations/osk.background");
     cover->blockTouch = true;
     touchScreen->Add(cover);
     
@@ -58,7 +60,7 @@ OSK::OSK(osk::InputHandler* handler) : Form(true), handler(handler) {
     
     Vector2 bs(24, 32);
     Vector2 bpen;
-    Vector2 bpstart(160-bs.x*(12.5/2), 68);
+    Vector2 bpstart(160-bs.x*(12.5/2), 68+5);
     int line = -1;
     float linestart [] = {0, .5, .75, 1.25, 2.75-1};
     string chr = "\n1234567890-=\nqwertyuiop[]\nasdfghjkl;\'\nzxcvbnm,./\n` \\";
@@ -106,9 +108,14 @@ OSK::OSK(osk::InputHandler* handler) : Form(true), handler(handler) {
     key->eOnTap = [this](auto& btn){ this->handler->Enter(); this->OnKey(); };
     touchScreen->Add(key);
     
-    preview = std::make_shared<DrawLayerProxy>(VRect::touchScreen.TopEdge(68).Expand(-2), [this](auto& layer){ this->DrawPreview(layer); }, true);
+    previewSc = std::make_shared<ScrollField>(VRect(VRect::touchScreen.TopEdge(66)));
+    touchScreen->Add(previewSc);
+    
+    preview = std::make_shared<DrawLayerProxy>(VRect::touchScreen.TopEdge(66).Expand(-2, 0), [this](auto& layer){ this->DrawPreview(layer); }, true);
     preview->eOnTap = [this](auto& layer){ this->OnPreviewTap(layer); };
-    touchScreen->Add(preview);
+    previewSc->Add(preview);
+    
+    RefreshPreview();
 }
 
 void OSK::Update(bool focused) {
@@ -117,30 +124,29 @@ void OSK::Update(bool focused) {
     }
     if (focused) {
         if (InputManager::Pressed(Keys::B)) handler->Done();
-        if (true || handler->showPreview) {
+        if (handler->showPreview) {
             if (InputManager::Pressed(Keys::DPadLeft)) {
-                handler->SetCursor(handler->GetCursor() - 1);
+                auto c = handler->GetCursor();
-                preview->Refresh();
+                if (c > 0) handler->SetCursor(c - 1);
+                RefreshPreview();
             }
             if (InputManager::Pressed(Keys::DPadRight)) {
                 handler->SetCursor(handler->GetCursor() + 1);
-                preview->Refresh();
+                RefreshPreview();
             }
             
             auto& tc = PreviewTC();
             if (InputManager::Pressed(Keys::DPadUp)) {
                 Vector2 pt = tc.GetCursorPosition(preview->rect, handler->GetPreviewText(), handler->GetCursor());
-                string msr = "|";
+                pt.y -= tc.Measure("|").y * 0.5f;
-                pt.y -= tc.Measure(msr).y * 0.5f;
                 handler->SetCursor(tc.GetCursorFromPoint(preview->rect, handler->GetPreviewText(), pt));
-                preview->Refresh();
+                RefreshPreview();
             }
             if (InputManager::Pressed(Keys::DPadDown)) {
                 Vector2 pt = tc.GetCursorPosition(preview->rect, handler->GetPreviewText(), handler->GetCursor());
-                string msr = "|";
+                pt.y += tc.Measure("|").y * 1.5f;
-                pt.y += tc.Measure(msr).y * 1.5f;
                 handler->SetCursor(tc.GetCursorFromPoint(preview->rect, handler->GetPreviewText(), pt));
-                preview->Refresh();
+                RefreshPreview();
             }
         }
         
@@ -157,23 +163,47 @@ void OSK::Update(bool focused) {
 }
 
 void OSK::OnKey() {
+    RefreshPreview();
+}
+
+void OSK::RefreshPreview() {
+    auto& tc = PreviewTC();
+    if (handler->showPreview) {
+        Vector2 sz = tc.Measure(handler->GetPreviewText(), preview->rect.size.x);
+        preview->Resize(Vector2(preview->rect.size.x, std::max(sz.y + textHang, previewSc->rect.size.y))); // I guess a magic four will do
+        
+        Vector2 cp = tc.GetCursorPosition(preview->rect, handler->GetPreviewText(), handler->GetCursor());
+        Vector2 cs = tc.Measure("|") + Vector2(0, textHang);
+        previewSc->ScrollIntoView(VRect(cp, cs));//*/
+        
+    } else {
+        preview->Resize(Vector2(preview->rect.size.x, 66));
+    }
     preview->Refresh();
 }
 
 void OSK::DrawPreview(DrawLayerProxy& layer) {
-    if (true || handler->showPreview) {
+    if (handler->showPreview) {
         auto& tc = PreviewTC();
         tc.Print(layer.rect, handler->GetPreviewText(), Vector2::zero);
         
         Vector2 cp = tc.GetCursorPosition(layer.rect, handler->GetPreviewText(), handler->GetCursor());
         string cc = "|";
-        tc.Print(cp, cc, Vector2::zero);
+        tc.Print(cp, cc);
+        
+        //Vector2 cs = tc.Measure("|") + Vector2(0, textHang);
+        //previewSc->ScrollIntoView(VRect(cp, cs));
+    } else {
+        static auto tc = ThemeManager::GetMetric<starlight::TextConfig>("/dialogs/OSK/noPreview");
+        tc.Print(layer.rect, "(no preview available)");
     }
 }
 
 void OSK::OnPreviewTap(DrawLayerProxy& layer) {
+    if (handler->showPreview) {
         Vector2 tpos = InputManager::TouchPos() - layer.ScreenRect().pos;
         auto& tc = PreviewTC();
         handler->SetCursor(tc.GetCursorFromPoint(layer.rect, handler->GetPreviewText(), tpos));
-    preview->Refresh();
+        RefreshPreview();
+    }
 }

libstarlight/source/starlight/dialog/OSK.h

@@ -6,6 +6,7 @@
 #include <memory>
 
 #include "starlight/ui/Form.h"
+#include "starlight/ui/ScrollField.h"
 #include "starlight/ui/DrawLayerProxy.h"
 
 #include "starlight/dialog/osk/InputHandler.h"
@@ -15,8 +16,11 @@ namespace starlight {
         class OSK : public ui::Form, public ui::FormCreator<OSK> {
         private:
             std::shared_ptr<ui::UIContainer> setContainer;
+            std::shared_ptr<ui::ScrollField> previewSc;
             std::shared_ptr<ui::DrawLayerProxy> preview;
             
+            //Vector2 cursorPos;
+        
         public:
             std::unique_ptr<osk::InputHandler> handler;
             
@@ -27,6 +31,7 @@ namespace starlight {
             
             void OnKey();
             
+            void RefreshPreview();
             void DrawPreview(ui::DrawLayerProxy& layer);
             void OnPreviewTap(ui::DrawLayerProxy& layer);
         };

libstarlight/source/starlight/gfx/BitmapFont.cpp

@@ -64,7 +64,9 @@ BitmapFont::CharInfo& BitmapFont::Char(char c) {
 }
 
 Vector2 BitmapFont::MeasureTo(const std::string& msg, bool total, unsigned int end, float maxWidth) {
+    if (msg == "") return Vector2::zero;
     if (total) {
+        if (end == 0) return Vector2(0, lineHeight);
         Vector2 measure = Vector2::zero;
         
         ForChar(msg, [&, this](auto& s){
@@ -81,11 +83,14 @@ Vector2 BitmapFont::MeasureTo(const std::string& msg, bool total, unsigned int e
     Vector2 measure;
     bool found = false;
     
-    ForChar(msg, [&, this, total, end](auto& s){
+    unsigned int et = end - 1;
+    if (end == 0) et = 0;
+    ForChar(msg, [&, this, total, end, et](auto& s){
         measure = Vector2(s.lineAcc + s.cc->advX, lineHeight * s.lineNum);
-        if (s.i == end-1) { 
+        if (s.i >= et) { 
             found = true;
             if (s.i == s.lineEnd) measure = Vector2(0, lineHeight * (s.lineNum + 1)); // linebreak == next line
+            if (end == 0) measure = Vector2(0, lineHeight * s.lineNum);
             return true;
         }
         

libstarlight/source/starlight/ui/DrawLayerProxy.cpp

@@ -29,6 +29,7 @@ void DrawLayerProxy::PreDraw() {
 
 void DrawLayerProxy::Draw() {
     if (canvas) {
+        auto rect = (this->rect + GFXManager::GetOffset()).IntSnap();
         canvas->Draw(VRect(rect.pos, canvas->rect.size));
     } else {
         if (eDraw) eDraw(*this);

libstarlight/source/starlight/ui/Form.h

@@ -58,7 +58,7 @@ namespace starlight {
             //
             
         public:
-            int priority = 0;
+            float priority = 0;
             unsigned int flags = 0;
             
             std::shared_ptr<UIContainer> touchScreen = nullptr;

libstarlight/source/starlight/ui/ScrollField.cpp

@@ -38,6 +38,18 @@ void ScrollField::Update() {
     scrollOffset.y = std::max(0.0f, std::min(scrollOffset.y, scrollMax.y));
 }
 
+void ScrollField::ScrollIntoView(Vector2 pt) {
+    Vector2 sm = pt - rect.size;
+    
+    scrollOffset.x = std::max(sm.x, std::min(scrollOffset.x, pt.x));
+    scrollOffset.y = std::max(sm.y, std::min(scrollOffset.y, pt.y));
+    
+    // hmm. doesn't play well with pending resizes
+    //scrollOffset.x = std::max(0.0f, std::min(scrollOffset.x, scrollMax.x));
+    //scrollOffset.y = std::max(0.0f, std::min(scrollOffset.y, scrollMax.y));
+}
+void ScrollField::ScrollIntoView(VRect box) { ScrollIntoView(box.BottomRight()); ScrollIntoView(box.pos); }
+
 void ScrollField::OnProcessTouchEvent() { // stop when child element touched
     if (InputManager::Pressed(Keys::Touch)) scrollVel = Vector2::zero;
 }

libstarlight/source/starlight/ui/ScrollField.h

@@ -16,6 +16,9 @@ namespace starlight {
             
             void Update() override;
             
+            void ScrollIntoView(Vector2 pt);
+            void ScrollIntoView(VRect box);
+            
             // events
             void OnTouchOn() override;
             void OnTouchOff() override { }
@@ -33,4 +36,3 @@ namespace starlight {
         };
     }
 }
-

libstarlight/todo.txt

@@ -3,20 +3,21 @@
 
 roadmap to first release, in no particular order {
     finish implementing OSK! {
-        enable scrolling preview (and scroll to cursor where applicable)
+        - fix cursor-down
-        polish!
+        polish! {
+            - background
+            actual cursor image?
+        }
         InputManager::OpenKeyboard
     }
+    fix [ offset (-1 it)
     
     add generic backdrop assets (and form)
     
-    fix lowercase j running into things
-    adjust monospace line height (and maybe offset) to closer match the vwf of the same size
-    
     add license!! (MIT?)
     ADD README.MD PLS
 } then consider these before 1.0 "gold" {
-    should form priority be a float?
+    - should form priority be a float?
     make closing forms a bit less finicky (add them to a separate list and let the Application remove them from the list)
     add customization for Button (alternate idle/press images, optional glyph drawable)
     ^ use that to spice up the OSK

testbed/source/Core.cpp

@@ -78,6 +78,7 @@ void Core::Init() {
         
         auto tb = std::make_shared<sl::ui::TextBox>(VRect(0, 64, 320, 24).Expand(-16, 0));
         tb->text = "TextBox testing in progress. ij ji lj jl";
+        tb->multiLine = true;
         form->touchScreen->Add(tb);
         
         /*label->SetFont("default.16");

themes/default/metrics.json

@@ -45,6 +45,12 @@
                 "font" : "default.16",
                 "textColor" : "white",
                 "borderColor" : "black"
+            },
+            "noPreview" : {
+                "font" : "default.16",
+                "textColor" : "midGray",
+                "borderColor" : "darkGray",
+                "justification" : [0.5, 0.5]
             }
         }
     },