1 files changed, 143 insertions, 0 deletions
diff --git a/textscroller.c b/textscroller.c
new file mode 100644
index 00000000..b1763834
--- /dev/null
+++ b/textscroller.c
@@ -0,0 +1,143 @@
+#include "textscroller.h"
+
+void cTextScroll::SetText(const char *text, cRect position, tColor colorFg, tColor colorBg, cFont *font) {
+    if( Osd == NULL )
+        return;
+
+    Text = text;
+
+    Font = font;
+    Position = position;
+
+    ColorFg = colorFg; ColorBg = colorBg;
+    cRect drawPort(0, 0, font->Width(Text.c_str()), Position.Height());
+
+    if( Osd && Pixmap )
+        Osd->DestroyPixmap(Pixmap);
+
+    Pixmap = Osd->CreatePixmap(2, Position, drawPort);
+    Pixmap->Fill( colorBg );
+    Draw();
+}
+
+void cTextScroll::Reset(void) {
+    if( !Pixmap )
+        return;
+
+    Pixmap->SetDrawPortPoint(cPoint(0, 0));
+    waitSteps = WAITSTEPS;
+}
+
+void cTextScroll::Draw(void) {
+    if( !Pixmap )
+        return;
+    Pixmap->DrawText(cPoint(0, 0), Text.c_str(), ColorFg, ColorBg, Font);
+}
+
+void cTextScroll::DoStep(int Step) {
+    if( !Pixmap )
+        return;
+
+    // wait at the beginning for better read
+    if( waitSteps > 0 ) {
+        waitSteps--;
+        return;
+    }
+    // wait after return to the front
+    if( ResetX ) {
+        ResetX = false;
+        Pixmap->SetDrawPortPoint(cPoint(0, 0));
+        waitSteps = WAITSTEPS;
+        return;
+    }
+
+    int drawPortX = Pixmap->DrawPort().X();
+
+    if( isReserveStep )
+        drawPortX += Step;
+    else
+        drawPortX -= Step;
+
+    int maxX = Pixmap->DrawPort().Width() - Pixmap->ViewPort().Width();
+    maxX *= -1;
+
+    if( ScrollType == 0 ) {
+        if( drawPortX <= maxX ) {
+            drawPortX += Step;
+            ResetX = true;
+            waitSteps = WAITSTEPS;
+        }
+    } else if( ScrollType == 1 ) {
+        if( drawPortX <= maxX ) {
+            isReserveStep = true;
+            waitSteps = WAITSTEPS;
+        } else if( drawPortX > 0 ) {
+            isReserveStep = false;
+            waitSteps = WAITSTEPS;
+        }
+
+    }
+
+    Pixmap->SetDrawPortPoint(cPoint(drawPortX, 0));
+}
+
+cTextScrollers::cTextScrollers() {
+}
+
+cTextScrollers::~cTextScrollers() {
+}
+
+void cTextScrollers::Clear(void) {
+    Cancel(-1);
+    while( Active() )
+        cCondWait::SleepMs(10);
+
+    std::vector<cTextScroll *>::iterator it;
+    for( it = Scrollers.begin(); it != Scrollers.end(); it++) {
+        delete *it;
+    }
+
+    Scrollers.clear();
+}
+
+void cTextScrollers::AddScroller(const char *text, cRect position, tColor colorFg, tColor colorBg, cFont *font) {
+    Cancel(-1);
+    while (Active())
+        cCondWait::SleepMs(10);
+
+    Scrollers.push_back( new cTextScroll(Osd, scrollType) );
+    Scrollers.back()->SetText(text, position, colorFg, colorBg, font);
+
+    if( !Running() ) {
+        Start();
+    }
+}
+
+void cTextScrollers::Action(void) {
+    std::vector<cTextScroll *>::iterator it;
+    for( it = Scrollers.begin(); it != Scrollers.end(); it++) {
+        if( !Running() )
+            return;
+        cPixmap::Lock();
+        (*it)->Reset();
+        cPixmap::Unlock();
+    }
+
+    while( Running() ) {
+        std::vector<cTextScroll *>::iterator it;
+        for( it = Scrollers.begin(); it != Scrollers.end(); it++) {
+            if( !Running() )
+                return;
+            cPixmap::Lock();
+            (*it)->DoStep(scrollStep);
+            cPixmap::Unlock();
+        }
+
+        if (Running())
+            Osd->Flush();
+
+        if (Running())
+            cCondWait::SleepMs(scrollDelay);
+    }
+}
+