A basic graphics package for the LPC4088 Display Module.
Dependents: lpc4088_displaymodule_demo_sphere sampleGUI sampleEmptyGUI lpc4088_displaymodule_fs_aid ... more
Fork of DMBasicGUI by
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; +} + +