From 5f2e299a2f0d86e450340079930b98651103722f Mon Sep 17 00:00:00 2001 From: David Robillard Date: Sun, 8 Mar 2020 17:47:13 +0100 Subject: Move demo programs to examples directory These are not really tests, but examples or demos, which has caused some confusion in the past. So, move them, and make room for actual tests. --- examples/pugl_embed_demo.c | 394 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 394 insertions(+) create mode 100644 examples/pugl_embed_demo.c (limited to 'examples/pugl_embed_demo.c') diff --git a/examples/pugl_embed_demo.c b/examples/pugl_embed_demo.c new file mode 100644 index 0000000..43d3d4e --- /dev/null +++ b/examples/pugl_embed_demo.c @@ -0,0 +1,394 @@ +/* + Copyright 2012-2019 David Robillard + + Permission to use, copy, modify, and/or distribute this software for any + purpose with or without fee is hereby granted, provided that the above + copyright notice and this permission notice appear in all copies. + + THIS SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. +*/ + +/** + @file pugl_embed_demo.c An example of embedding a view in another. +*/ + +#define GL_SILENCE_DEPRECATION 1 + +#include "demo_utils.h" +#include "test/test_utils.h" + +#include "pugl/gl.h" +#include "pugl/pugl.h" +#include "pugl/pugl_gl.h" + +#include +#include +#include +#include +#include + +static const int borderWidth = 64; + +typedef struct +{ + PuglWorld* world; + PuglView* parent; + PuglView* child; + bool continuous; + int quit; + double xAngle; + double yAngle; + float dist; + double lastMouseX; + double lastMouseY; + double lastDrawTime; + unsigned framesDrawn; + bool mouseEntered; + bool verbose; +} PuglTestApp; + +static const float backgroundVertices[] = { + -1.0f, 1.0f, -1.0f, // Top left + 1.0f, 1.0f, -1.0f, // Top right + -1.0f, -1.0f, -1.0f, // Bottom left + 1.0f, -1.0f, -1.0f, // Bottom right +}; + +static PuglRect +getChildFrame(const PuglRect parentFrame) +{ + const PuglRect childFrame = { + borderWidth, + borderWidth, + parentFrame.width - 2 * borderWidth, + parentFrame.height - 2 * borderWidth + }; + + return childFrame; +} + +static void +onReshape(PuglView* view, int width, int height) +{ + (void)view; + + const float aspect = (float)width / (float)height; + + glEnable(GL_DEPTH_TEST); + glDepthFunc(GL_LESS); + glClearColor(0.2f, 0.2f, 0.2f, 1.0f); + + glMatrixMode(GL_PROJECTION); + glLoadIdentity(); + glViewport(0, 0, width, height); + + float projection[16]; + perspective(projection, 1.8f, aspect, 1.0f, 100.0f); + glLoadMatrixf(projection); +} + +static void +onDisplay(PuglView* view) +{ + PuglTestApp* app = (PuglTestApp*)puglGetHandle(view); + + const double thisTime = puglGetTime(app->world); + if (app->continuous) { + const double dTime = thisTime - app->lastDrawTime; + app->xAngle = fmod(app->xAngle + dTime * 100.0, 360.0); + app->yAngle = fmod(app->yAngle + dTime * 100.0, 360.0); + } + + glMatrixMode(GL_MODELVIEW); + glLoadIdentity(); + glTranslatef(0.0f, 0.0f, app->dist * -1); + glRotatef((float)app->xAngle, 0.0f, 1.0f, 0.0f); + glRotatef((float)app->yAngle, 1.0f, 0.0f, 0.0f); + + const float bg = app->mouseEntered ? 0.2f : 0.1f; + glClearColor(bg, bg, bg, 1.0f); + glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); + + if (puglHasFocus(app->child)) { + // Draw cube surfaces + glEnableClientState(GL_VERTEX_ARRAY); + glEnableClientState(GL_COLOR_ARRAY); + glVertexPointer(3, GL_FLOAT, 0, cubeStripVertices); + glColorPointer(3, GL_FLOAT, 0, cubeStripVertices); + glDrawArrays(GL_TRIANGLE_STRIP, 0, 14); + glDisableClientState(GL_COLOR_ARRAY); + glDisableClientState(GL_VERTEX_ARRAY); + + glColor3f(0.0f, 0.0f, 0.0f); + } else { + glColor3f(1.0f, 1.0f, 1.0f); + } + + // Draw cube wireframe + glEnableClientState(GL_VERTEX_ARRAY); + glVertexPointer(3, GL_FLOAT, 0, cubeFrontLineLoop); + glDrawArrays(GL_LINE_LOOP, 0, 4); + glVertexPointer(3, GL_FLOAT, 0, cubeBackLineLoop); + glDrawArrays(GL_LINE_LOOP, 0, 4); + glVertexPointer(3, GL_FLOAT, 0, cubeSideLines); + glDrawArrays(GL_LINES, 0, 8); + glDisableClientState(GL_VERTEX_ARRAY); + + app->lastDrawTime = thisTime; + ++app->framesDrawn; +} + +static void +swapFocus(PuglTestApp* app) +{ + if (puglHasFocus(app->parent)) { + puglGrabFocus(app->child); + } else { + puglGrabFocus(app->parent); + } + + puglPostRedisplay(app->parent); + puglPostRedisplay(app->child); +} + +static void +onKeyPress(PuglView* view, const PuglEventKey* event, const char* prefix) +{ + PuglTestApp* app = (PuglTestApp*)puglGetHandle(view); + PuglRect frame = puglGetFrame(view); + + if (event->key == '\t') { + swapFocus(app); + } else if (event->key == 'q' || event->key == PUGL_KEY_ESCAPE) { + app->quit = 1; + } else if (event->state & PUGL_MOD_CTRL && event->key == 'c') { + puglSetClipboard(view, NULL, "Pugl test", strlen("Pugl test") + 1); + fprintf(stderr, "%sCopy \"Pugl test\"\n", prefix); + } else if (event->state & PUGL_MOD_CTRL && event->key == 'v') { + const char* type = NULL; + size_t len = 0; + const char* text = (const char*)puglGetClipboard(view, &type, &len); + fprintf(stderr, "%sPaste \"%s\"\n", prefix, text); + } else if (event->state & PUGL_MOD_SHIFT) { + if (event->key == PUGL_KEY_UP) { + frame.height += 10; + } else if (event->key == PUGL_KEY_DOWN) { + frame.height -= 10; + } else if (event->key == PUGL_KEY_LEFT) { + frame.width -= 10; + } else if (event->key == PUGL_KEY_RIGHT) { + frame.width += 10; + } else { + return; + } + puglSetFrame(view, frame); + } else { + if (event->key == PUGL_KEY_UP) { + frame.y -= 10; + } else if (event->key == PUGL_KEY_DOWN) { + frame.y += 10; + } else if (event->key == PUGL_KEY_LEFT) { + frame.x -= 10; + } else if (event->key == PUGL_KEY_RIGHT) { + frame.x += 10; + } else { + return; + } + puglSetFrame(view, frame); + } +} + +static PuglStatus +onParentEvent(PuglView* view, const PuglEvent* event) +{ + PuglTestApp* app = (PuglTestApp*)puglGetHandle(view); + const PuglRect parentFrame = puglGetFrame(view); + + printEvent(event, "Parent: ", app->verbose); + + switch (event->type) { + case PUGL_CONFIGURE: + onReshape(view, + (int)event->configure.width, + (int)event->configure.height); + + puglSetFrame(app->child, getChildFrame(parentFrame)); + break; + case PUGL_EXPOSE: + if (puglHasFocus(app->parent)) { + glMatrixMode(GL_MODELVIEW); + glLoadIdentity(); + glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); + + glEnableClientState(GL_VERTEX_ARRAY); + glEnableClientState(GL_COLOR_ARRAY); + glVertexPointer(3, GL_FLOAT, 0, backgroundVertices); + glColorPointer(3, GL_FLOAT, 0, backgroundVertices); + glDrawArrays(GL_TRIANGLE_STRIP, 0, 4); + glDisableClientState(GL_COLOR_ARRAY); + glDisableClientState(GL_VERTEX_ARRAY); + } else { + glClearColor(0.0f, 0.0f, 0.0f, 1.0f); + glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); + } + break; + case PUGL_KEY_PRESS: + onKeyPress(view, &event->key, "Parent: "); + break; + case PUGL_MOTION_NOTIFY: + break; + case PUGL_CLOSE: + app->quit = 1; + break; + default: + break; + } + + return PUGL_SUCCESS; +} + +static PuglStatus +onEvent(PuglView* view, const PuglEvent* event) +{ + PuglTestApp* app = (PuglTestApp*)puglGetHandle(view); + + printEvent(event, "Child: ", app->verbose); + + switch (event->type) { + case PUGL_CONFIGURE: + onReshape(view, (int)event->configure.width, (int)event->configure.height); + break; + case PUGL_EXPOSE: + onDisplay(view); + break; + case PUGL_CLOSE: + app->quit = 1; + break; + case PUGL_KEY_PRESS: + onKeyPress(view, &event->key, "Child: "); + break; + case PUGL_MOTION_NOTIFY: + app->xAngle -= event->motion.x - app->lastMouseX; + app->yAngle += event->motion.y - app->lastMouseY; + app->lastMouseX = event->motion.x; + app->lastMouseY = event->motion.y; + puglPostRedisplay(view); + puglPostRedisplay(app->parent); + break; + case PUGL_SCROLL: + app->dist = fmaxf(10.0f, app->dist + (float)event->scroll.dy); + puglPostRedisplay(view); + break; + case PUGL_ENTER_NOTIFY: + app->mouseEntered = true; + break; + case PUGL_LEAVE_NOTIFY: + app->mouseEntered = false; + break; + default: + break; + } + + return PUGL_SUCCESS; +} + +int +main(int argc, char** argv) +{ + PuglTestApp app = {0}; + app.dist = 10; + + const PuglTestOptions opts = puglParseTestOptions(&argc, &argv); + if (opts.help) { + puglPrintTestUsage("pugl_test", ""); + return 1; + } + + app.continuous = opts.continuous; + app.verbose = opts.verbose; + + app.world = puglNewWorld(); + app.parent = puglNewView(app.world); + app.child = puglNewView(app.world); + + puglSetClassName(app.world, "Pugl Test"); + + const PuglRect parentFrame = { 0, 0, 512, 512 }; + puglSetFrame(app.parent, parentFrame); + puglSetMinSize(app.parent, borderWidth * 3, borderWidth * 3); + puglSetAspectRatio(app.parent, 1, 1, 16, 9); + puglSetBackend(app.parent, puglGlBackend()); + + puglSetViewHint(app.parent, PUGL_USE_DEBUG_CONTEXT, opts.errorChecking); + puglSetViewHint(app.parent, PUGL_RESIZABLE, opts.resizable); + puglSetViewHint(app.parent, PUGL_SAMPLES, opts.samples); + puglSetViewHint(app.parent, PUGL_DOUBLE_BUFFER, opts.doubleBuffer); + puglSetViewHint(app.parent, PUGL_SWAP_INTERVAL, opts.doubleBuffer); + puglSetViewHint(app.parent, PUGL_IGNORE_KEY_REPEAT, opts.ignoreKeyRepeat); + puglSetHandle(app.parent, &app); + puglSetEventFunc(app.parent, onParentEvent); + + PuglStatus st = PUGL_SUCCESS; + const uint8_t title[] = { 'P', 'u', 'g', 'l', ' ', + 'P', 'r', 0xC3, 0xBC, 'f', 'u', 'n', 'g', 0 }; + if ((st = puglCreateWindow(app.parent, (const char*)title))) { + return logError("Failed to create parent window (%s)\n", + puglStrerror(st)); + } + + puglSetFrame(app.child, getChildFrame(parentFrame)); + puglSetParentWindow(app.child, puglGetNativeWindow(app.parent)); + + puglSetViewHint(app.child, PUGL_USE_DEBUG_CONTEXT, opts.errorChecking); + puglSetViewHint(app.child, PUGL_SAMPLES, opts.samples); + puglSetViewHint(app.child, PUGL_DOUBLE_BUFFER, opts.doubleBuffer); + puglSetViewHint(app.child, PUGL_SWAP_INTERVAL, 0); + puglSetBackend(app.child, puglGlBackend()); + puglSetViewHint(app.child, PUGL_IGNORE_KEY_REPEAT, opts.ignoreKeyRepeat); + puglSetHandle(app.child, &app); + puglSetEventFunc(app.child, onEvent); + + if ((st = puglCreateWindow(app.child, NULL))) { + return logError("Failed to create child window (%s)\n", + puglStrerror(st)); + } + + puglShowWindow(app.parent); + puglShowWindow(app.child); + + PuglFpsPrinter fpsPrinter = { puglGetTime(app.world) }; + bool requestedAttention = false; + while (!app.quit) { + const double thisTime = puglGetTime(app.world); + + if (app.continuous) { + puglPostRedisplay(app.parent); + puglPostRedisplay(app.child); + } else { + puglPollEvents(app.world, -1); + } + + puglDispatchEvents(app.world); + + if (!requestedAttention && thisTime > 5.0) { + puglRequestAttention(app.parent); + requestedAttention = true; + } + + if (app.continuous) { + puglPrintFps(app.world, &fpsPrinter, &app.framesDrawn); + } + } + + puglFreeView(app.child); + puglFreeView(app.parent); + puglFreeWorld(app.world); + + return 0; +} -- cgit v1.2.1