Context Stacks
How does qurza2d draw the drawing information and drawing properties into the graphics context?
Description
Creates a new project, customizes a view class and storyboard association, and overrides the Drowrect method in the class.Three steps to draw a line:(1) Getting context(2) Drawing(3) RenderingRequirements: Draw two separate linesCode and Effect diagram:
Copy Code code as follows:
-(void) DrawRect: (cgrect) rect
{
Get context
Cgcontextref Ctx=uigraph
digital data 10x100, GBR array data, each 320 byte, 10 digits 3200byte' BGR a point, 10x10 a number, a point three bytes (binary 8-bit, 16-system 00~FF)' Line 10 points 30 bytes + Line end tag 00 2 bytes 32 bytes, so a 10x100 width is less than long image each digit 10x10 is 320 bytes' The No Line end tag 0000, directly 300 bytes.These are the BMP 24bit data details.' As for the head, also very simple, con
interface layout? We'll explore these in the following sections.
One, the current popular mobile phone screen size
In the figure below, I have taken the top 10 best-selling mobile phones in one of the country's cyber-electric cities for a week:
Although only a week in 2010 years of mobile phone sales rankings, it can be seen that the current use of mobile phone screen is very different, various screen size and resolution have. If you want to fit more groups of users, you need to consider
# Include # Include Void circlePoint (int x, int y)/* circle program by octal Method */{Circle (320 + x * 20,240 + y *, 3 );Circle (320 + y * 20,240 + x *, 3 );Circle (320-y * 20,240 + x * 20, 3 );Circle (320-x * 20,240 + y * 20, 3 );Circle (320-x * 20,240 + y * 20, 3 );Circ
Px: The pixel of the screen.In: inchesMM: mmPT: LB, 1/72 inchDP: an abstract unit based on density. If a screen of DPI is displayed, 1dp = 1px.Dip: equivalent to DPSP: similar to DP, but it also scales according to the user's font size preference.We recommend that you use SP as the unit of text, and dip for others.
The following is an overview of the relationship between DIP and PX:
The following figure shows the resolution information density, which is the screen density.
Name
Reso
1. Several termsVGA, HVGA, QVGA, WVGA, WQVGAThese terms refer to the screen resolution.VGA: Video Graphics Array: displays the drawing matrix, which is equivalent to 640x480 pixels;HVGA: Half-size VGA; that is, Half of VGA, resolution: 480 × 320;QVGA: Quarter VGA; that is, 1/4 of VGA, resolution: 320 × 240;WVGA: Wide Video Graphics Array; that is, expanded VGA with a resolution of 800x480 pixels;
WQVGA: Wid
).XLarge is the category that was added from Android 2.3 (API level 9).DPI is the abbreviation for "dot per inch" and the number of pixels per inch.General screen: LDPI is 120,mdpi is 160,hdpi is 240,xhdpi is 320.Third, how to achieve adaptive screen size?1) Interface layout aspectIt is necessary to prepare 5 sets of layouts according to the size of the physical size, layout (put some common layout XML files, such as the top and bottom layouts in the
Basic knowledgeQVGA 240*320 pixels |VGA 640*480 pixels |WVGA 800*480 pixels |HVGA 480*320 pixels |See that a lot of people don't understand the difference between DP, SP, and PX: Now let's introduce the DP and SP.DP is also dip. This is basically similar to SP.You can use a DP or SP if you set properties that represent length, height, and so on. However, if you set the font, you need to use the SP. The DP i
state is switched to the game_running state, and the game is officially started. Then the presentrunning () method corresponding to the game_running state will be executed in the same present () method. This is the application of the state machine mode, which will be widely used later. Next, let's take a look at other gamescreen member variables and constructor methods. The Code is as follows:
OrthographicCamera guiCam; Vector3 touchPoint; SpriteBatch batcher; World world; World
Cocos2dx cross-platform engine is really interesting. I recently decided to transfer the game written by oC to cocos2dx.
However, Multi-Resolution on the androd platform is a big problem, which is not called in IOS. 480*320*960*640*1024*768 can be well solved based on pixels.
Fortunately, the setdesignresolutionsize provided on cocos2dx supports multi-resolution, but you will know after using it. If the screen ratio is not 480*
The content of {code...} $ json is like this: {code ...}
$ Json content is like this:
{"pagination":{},"meta":{"code":200},"data":[{"attribution":null,"tags":[],"type":"image","location":null,"comments":{"count":0},"filter":"Normal","created_time":"1453516817","link":"https:\/\/www.instagram.com\/p\/BA3XjWMP4ye\/","likes":{"count":0},"images":{"low_resolution":{"url":"https:\/\/scontent.cdninstagram.com\/hphotos-xpf1\/t51.2885-15\/s320x320\/e35\/12547507_218933238449715_1618422633_n.jpg","wi
Today, when collecting images from the Momo website, the resolution of the images will be changed to 320*480, and the original images contain pixel information. For example, the clear cottage wallpaper (320*480) is the last one I want to leave. what should I do? First we should... SyntaxHighlighter. all ();
Today, when collecting images from the Momo website, the resolution of the images will be changed to
inside the verification code before learning how to use the image verification code.
First look at the getcode.asp file, there are a few lines is this:
Ados.loadfromfile (Server.MapPath) ("body." Fix "))
Ados1.write Ados.read (1280)
For I=0 to 3
ados.position= (9-zimg (i)) *320
ados1.position=i*320
Ados1.write Ados.read (320)
Next
Ados.loadfromfile (Server.Map
If the company decides to deploy an optical fiber channel storage area network (SAN), then it should determine the supplier of the switch, because it is unwise to mix different brands.
Fiber Channel switches need to communicate and cooperate with each other to manage the entire network. To ensure that the switches communicate well with each other, the best way is to select one of the three top switch suppliers and then choose its products: brocade, Ci
"configuration file name ". For example, cfgEnable "cfgTechSales" 5. The command to save the configuration file on 2109 is "Save save. In this way, we have configured the partition (Zoning) on IBM 2109 ). You can run the ZoneHelp command on the vswitch to view other command information about partition configuration. **************************************** * ***************** Brocade 4 Gb SAN Switch (for HP c-Class BladeSystem) -ZONE: configure the
When configuring the HP switch, connect to the Console line of Cisco directly at startup, with the default baud rate. However, the command line does not display anything, so I thought the machine was broken and I changed several, the baud rate has also changed a lot. I also asked a senior network engineer, later, when I tested the brocade switch, a customer asked me whether the Console line of the brocade s
Bkjia.com exclusive Article] We have tested 13 manufacturers' 10 GB Ethernet switches. In addition to six mainstream vendors, Arista, Blade, Cisco, Dell, Extreme, HP ProCurve ), we will also test 3Com/H3C, Brocade, Enterasys, Force10, Fujitsu, Juniper, and Raptor products.
3Com/H3C has been acquired by HP during this test.) You will learn about the lack of samples and we will obtain relevant samples through HP) and announce that you will not participa
HDU TodayTime limit:15000/5000 MS (java/others) Memory limit:32768/32768 K (java/others)Total submission (s): 19366 Accepted Submission (s): 4552Problem description through the brocade SAC Help, Sea East group finally passed the crisis, from now on, HDU development has been downwind, to 2050 years, the group has been quite scale, said to enter the Qianjiang pork economic Development Zone 500 strong. At this time, Xhd couple also retreated to the seco
Problem description said last talk about the sea East group face strife, the company's elder also only left XHD couple two people. Obviously, as a businessman who has worked hard for years, XHD will not sit idly by.One day, when he was thinking about the remedy, suddenly thought of his family heirloom, that is the company set up, the father as a gift to send a brocade bag, Xu father at that time, not to the last resort, do not open it. "Now is not the
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