Diff: Application/AppColorPicker.cpp

Revision:

0:4977187e90c7

Child:

3:3fabfe3339b8

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Application/AppColorPicker.cpp	Thu Dec 11 11:03:57 2014 +0000
@@ -0,0 +1,170 @@
+/*
+ *  Copyright 2014 Embedded Artists AB
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+
+
+#include "mbed.h"
+#include "EthernetInterface.h"
+#include "AppColorPicker.h"
+#include "lpc_swim_font.h"
+
+/******************************************************************************
+ * Defines and typedefs
+ *****************************************************************************/
+ 
+#define BOX_SIDE   192 //256
+ 
+#define BTN_WIDTH  65
+#define BTN_HEIGHT 40
+#define BTN_OFF    20
+ 
+/******************************************************************************
+ * Global variables
+ *****************************************************************************/
+
+/******************************************************************************
+ * Private functions
+ *****************************************************************************/
+
+static void buttonClicked(uint32_t x)
+{
+  bool* done = (bool*)x;
+  *done = true;
+}
+
+void AppColorPicker::draw()
+{
+    // Prepare fullscreen
+    swim_window_open(_win, 
+                   _disp->width(), _disp->height(),         // full size
+                   (COLOR_T*)_fb,
+                   0,0,_disp->width()-1, _disp->height()-1, // window position and size
+                   1,                                       // border
+                   WHITE, WHITE, BLACK);                    // colors: pen, backgr, forgr
+    swim_set_title(_win, "Color Picker", BLACK);
+
+    swim_window_open(_colorwin, 
+                     _disp->width(), _disp->height(),         // full size
+                     (COLOR_T*)_fb,
+                     50,(_disp->height()-BOX_SIDE)/2,50+BOX_SIDE-1, BOX_SIDE+(_disp->height()-BOX_SIDE)/2,                 // window position and size
+                     0,                                       // border
+                     WHITE, WHITE, BLACK);                    // colors: pen, backgr, forgr
+    
+
+    uint16_t r, g, b;
+    uint16_t rx = BOX_SIDE/32;
+    //uint16_t gx = BOX_SIDE/64;
+    uint16_t bx = BOX_SIDE/32;
+    //uint16_t ry = BOX_SIDE/32;
+    uint16_t gy = BOX_SIDE/64;
+    //uint16_t by = BOX_SIDE/32;
+    uint16_t color;
+    for (int x = 0; x < BOX_SIDE; x++) {
+        r = (x/rx);
+        b = 0x1f - (x/bx);
+        color = ((r & 0x1f) << 11) | ((b & 0x1f) << 0);
+        for (int y = 0; y < BOX_SIDE; y++) {
+            g = (y/gy);
+            _colorwin->pen = color | ((g & 0x3f) << 5);
+            swim_put_pixel(_colorwin, x, y);
+        }
+    }
+    
+    _btn = new Button("Done", _win->fb, _win->xpmax - BTN_OFF - BTN_WIDTH, _win->ypmax - BTN_OFF - BTN_HEIGHT, BTN_WIDTH, BTN_HEIGHT);
+    _btn->draw();
+}
+
+/******************************************************************************
+ * Public functions
+ *****************************************************************************/
+
+AppColorPicker::AppColorPicker() : _disp(NULL), _win(NULL), _colorwin(NULL), _fb(NULL), _btn(NULL)
+{
+}
+
+AppColorPicker::~AppColorPicker()
+{
+    teardown();
+}
+
+bool AppColorPicker::setup()
+{
+    _disp = DMBoard::instance().display();
+    _win = (SWIM_WINDOW_T*)malloc(sizeof(SWIM_WINDOW_T));
+    _colorwin = (SWIM_WINDOW_T*)malloc(sizeof(SWIM_WINDOW_T));
+    _fb = _disp->allocateFramebuffer();
+
+    return (_win != NULL && _colorwin != NULL && _fb != NULL);
+}
+
+void AppColorPicker::runToCompletion()
+{
+    // Alternative 1: use the calling thread's context to run in
+    bool done = false;
+    draw();
+    _btn->setAction(buttonClicked, (uint32_t)&done);
+    void* oldFB = _disp->swapFramebuffer(_fb);
+    
+    // Wait for touches
+    TouchPanel* touch = DMBoard::instance().touchPanel();
+    TouchPanel::touchCoordinate_t coord;
+    char buf[10];
+    swim_set_pen_color(_win, BLACK);
+    while(!done) {
+      touch->read(coord);
+      if (coord.z > 0 &&
+          coord.x >= _colorwin->xpmin && coord.x <= _colorwin->xpmax && 
+          coord.y >= _colorwin->ypmin && coord.y <= _colorwin->ypmax) {
+          int x = coord.x - _colorwin->xpmin;
+          int y = coord.y - _colorwin->ypmin;
+          COLOR_T c = ((x/(BOX_SIDE/32))<<11) | ((y/(BOX_SIDE/64))<<5) | ((0x1f-(x/(BOX_SIDE/32)))<<0);
+          swim_set_fill_color(_win, c);
+          swim_put_box(_win, 350, 70, 430, 150);
+          sprintf(buf, "0x%04x  ", c);
+          swim_put_text_xy(_win, buf, 350, 160);
+      }
+      if (_btn->handle(coord.x, coord.y, coord.z > 0)) {
+          _btn->draw();
+      }
+    }
+    
+    // User has clicked the button, restore the original FB
+    _disp->swapFramebuffer(oldFB);
+    swim_window_close(_win);
+    swim_window_close(_colorwin);
+}
+
+bool AppColorPicker::teardown()
+{
+    if (_win != NULL) {
+        free(_win);
+        _win = NULL;
+    }
+    if (_colorwin != NULL) {
+        free(_colorwin);
+        _colorwin = NULL;
+    }
+    if (_fb != NULL) {
+        free(_fb);
+        _fb = NULL;
+    }
+    if (_btn != NULL) {
+        delete _btn;
+        _btn = NULL;
+    }
+    return true;
+}
+
+